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          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_LeverageRiskMember" xml:lang="en-US">Leverage Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_LeverageRiskMember" xlink:to="lab_cik0000908187_LeverageRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_LiquidityRiskMember" xlink:label="loc_cik0000908187_LiquidityRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_LiquidityRiskMember" xml:lang="en-US">Liquidity Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_LiquidityRiskMember" xlink:to="lab_cik0000908187_LiquidityRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" xlink:label="loc_cik0000908187_LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" xml:lang="en-US">Loans and Other Indebtedness Loan Acquisitions Participations and Assignments Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" xlink:to="lab_cik0000908187_LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_ManagementRiskMember" xlink:label="loc_cik0000908187_ManagementRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_ManagementRiskMember" xml:lang="en-US">Management Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_ManagementRiskMember" xlink:to="lab_cik0000908187_ManagementRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_MarketDiscountRiskMember" xlink:label="loc_cik0000908187_MarketDiscountRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_MarketDiscountRiskMember" xml:lang="en-US">Market Discount Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_MarketDiscountRiskMember" xlink:to="lab_cik0000908187_MarketDiscountRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_MarketDisruptionsRiskMember" xlink:label="loc_cik0000908187_MarketDisruptionsRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_MarketDisruptionsRiskMember" xml:lang="en-US">Market Disruptions Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_MarketDisruptionsRiskMember" xlink:to="lab_cik0000908187_MarketDisruptionsRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_MarketRiskMember" xlink:label="loc_cik0000908187_MarketRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_MarketRiskMember" xml:lang="en-US">Market Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_MarketRiskMember" xlink:to="lab_cik0000908187_MarketRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" xlink:label="loc_cik0000908187_MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" xml:lang="en-US">Mortgage Related and Other Asset Backed Instruments Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" xlink:to="lab_cik0000908187_MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_MortgageRelatedDerivativeInstrumentsRiskMember" xlink:label="loc_cik0000908187_MortgageRelatedDerivativeInstrumentsRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_MortgageRelatedDerivativeInstrumentsRiskMember" xml:lang="en-US">Mortgage Related Derivative Instruments Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_MortgageRelatedDerivativeInstrumentsRiskMember" xlink:to="lab_cik0000908187_MortgageRelatedDerivativeInstrumentsRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_MunicipalBondRiskMember" xlink:label="loc_cik0000908187_MunicipalBondRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_MunicipalBondRiskMember" xml:lang="en-US">Municipal Bond Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_MunicipalBondRiskMember" xlink:to="lab_cik0000908187_MunicipalBondRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_OperationalRiskMember" xlink:label="loc_cik0000908187_OperationalRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_OperationalRiskMember" xml:lang="en-US">Operational Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_OperationalRiskMember" xlink:to="lab_cik0000908187_OperationalRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_OtherInvestmentCompaniesRiskMember" xlink:label="loc_cik0000908187_OtherInvestmentCompaniesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_OtherInvestmentCompaniesRiskMember" xml:lang="en-US">Other Investment Companies Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_OtherInvestmentCompaniesRiskMember" xlink:to="lab_cik0000908187_OtherInvestmentCompaniesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_PortfolioTurnoverRiskMember" xlink:label="loc_cik0000908187_PortfolioTurnoverRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_PortfolioTurnoverRiskMember" xml:lang="en-US">Portfolio Turnover Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_PortfolioTurnoverRiskMember" xlink:to="lab_cik0000908187_PortfolioTurnoverRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" xlink:label="loc_cik0000908187_PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" xml:lang="en-US">Potential Conflicts of Interest Risk Allocation of Investment Opportunities [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" xlink:to="lab_cik0000908187_PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_PreferredSecuritiesRiskMember" xlink:label="loc_cik0000908187_PreferredSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_PreferredSecuritiesRiskMember" xml:lang="en-US">Preferred Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_PreferredSecuritiesRiskMember" xlink:to="lab_cik0000908187_PreferredSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_PrivacyAndDataSecurityRiskMember" xlink:label="loc_cik0000908187_PrivacyAndDataSecurityRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_PrivacyAndDataSecurityRiskMember" xml:lang="en-US">Privacy and Data Security Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_PrivacyAndDataSecurityRiskMember" xlink:to="lab_cik0000908187_PrivacyAndDataSecurityRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" xlink:label="loc_cik0000908187_PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" xml:lang="en-US">Privately Issued Mortgage Related Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" xlink:to="lab_cik0000908187_PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_PrivatePlacementsAndRestrictedSecuritiesRiskMember" xlink:label="loc_cik0000908187_PrivatePlacementsAndRestrictedSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_PrivatePlacementsAndRestrictedSecuritiesRiskMember" xml:lang="en-US">Private Placements and Restricted Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_PrivatePlacementsAndRestrictedSecuritiesRiskMember" xlink:to="lab_cik0000908187_PrivatePlacementsAndRestrictedSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_RealEstateRiskMember" xlink:label="loc_cik0000908187_RealEstateRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_RealEstateRiskMember" xml:lang="en-US">Real Estate Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_RealEstateRiskMember" xlink:to="lab_cik0000908187_RealEstateRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_RegulationSSecuritiesRiskMember" xlink:label="loc_cik0000908187_RegulationSSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_RegulationSSecuritiesRiskMember" xml:lang="en-US">Regulation S Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_RegulationSSecuritiesRiskMember" xlink:to="lab_cik0000908187_RegulationSSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_RegulatoryChangesRiskMember" xlink:label="loc_cik0000908187_RegulatoryChangesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_RegulatoryChangesRiskMember" xml:lang="en-US">Regulatory Changes Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_RegulatoryChangesRiskMember" xlink:to="lab_cik0000908187_RegulatoryChangesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_RegulatoryRiskCommodityPoolOperatorMember" xlink:label="loc_cik0000908187_RegulatoryRiskCommodityPoolOperatorMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_RegulatoryRiskCommodityPoolOperatorMember" xml:lang="en-US">Regulatory Risk Commodity Pool Operator [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_RegulatoryRiskCommodityPoolOperatorMember" xlink:to="lab_cik0000908187_RegulatoryRiskCommodityPoolOperatorMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_ReinvestmentRiskMember" xlink:label="loc_cik0000908187_ReinvestmentRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_ReinvestmentRiskMember" xml:lang="en-US">Reinvestment Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_ReinvestmentRiskMember" xlink:to="lab_cik0000908187_ReinvestmentRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_REITRiskMember" xlink:label="loc_cik0000908187_REITRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_REITRiskMember" xml:lang="en-US">REIT Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_REITRiskMember" xlink:to="lab_cik0000908187_REITRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_RepurchaseAgreementsRiskMember" xlink:label="loc_cik0000908187_RepurchaseAgreementsRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_RepurchaseAgreementsRiskMember" xml:lang="en-US">Repurchase Agreements Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_RepurchaseAgreementsRiskMember" xlink:to="lab_cik0000908187_RepurchaseAgreementsRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_RiskRetentionInvestmentRiskMember" xlink:label="loc_cik0000908187_RiskRetentionInvestmentRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_RiskRetentionInvestmentRiskMember" xml:lang="en-US">Risk Retention Investment Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_RiskRetentionInvestmentRiskMember" xlink:to="lab_cik0000908187_RiskRetentionInvestmentRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_SecuritiesLendingRiskMember" xlink:label="loc_cik0000908187_SecuritiesLendingRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_SecuritiesLendingRiskMember" xml:lang="en-US">Securities Lending Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_SecuritiesLendingRiskMember" xlink:to="lab_cik0000908187_SecuritiesLendingRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_SeniorDebtRiskMember" xlink:label="loc_cik0000908187_SeniorDebtRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_SeniorDebtRiskMember" xml:lang="en-US">Senior Debt Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_SeniorDebtRiskMember" xlink:to="lab_cik0000908187_SeniorDebtRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_ShortExposureRiskMember" xlink:label="loc_cik0000908187_ShortExposureRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_ShortExposureRiskMember" xml:lang="en-US">Short Exposure Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_ShortExposureRiskMember" xlink:to="lab_cik0000908187_ShortExposureRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_SmallerCompanyRiskMember" xlink:label="loc_cik0000908187_SmallerCompanyRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_SmallerCompanyRiskMember" xml:lang="en-US">Smaller Company Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_SmallerCompanyRiskMember" xlink:to="lab_cik0000908187_SmallerCompanyRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_SovereignDebtRiskMember" xlink:label="loc_cik0000908187_SovereignDebtRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_SovereignDebtRiskMember" xml:lang="en-US">Sovereign Debt Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_SovereignDebtRiskMember" xlink:to="lab_cik0000908187_SovereignDebtRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_StructuredInvestmentsRiskMember" xlink:label="loc_cik0000908187_StructuredInvestmentsRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_StructuredInvestmentsRiskMember" xml:lang="en-US">Structured Investments Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_StructuredInvestmentsRiskMember" xlink:to="lab_cik0000908187_StructuredInvestmentsRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_SubprimeRiskMember" xlink:label="loc_cik0000908187_SubprimeRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_SubprimeRiskMember" xml:lang="en-US">Subprime Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_SubprimeRiskMember" xlink:to="lab_cik0000908187_SubprimeRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_SyntheticConvertibleSecuritiesRiskMember" xlink:label="loc_cik0000908187_SyntheticConvertibleSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_SyntheticConvertibleSecuritiesRiskMember" xml:lang="en-US">Synthetic Convertible Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_SyntheticConvertibleSecuritiesRiskMember" xlink:to="lab_cik0000908187_SyntheticConvertibleSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_TaxRiskMember" xlink:label="loc_cik0000908187_TaxRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_TaxRiskMember" xml:lang="en-US">Tax Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_TaxRiskMember" xlink:to="lab_cik0000908187_TaxRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_TotalReturnSwapRiskMember" xlink:label="loc_cik0000908187_TotalReturnSwapRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_TotalReturnSwapRiskMember" xml:lang="en-US">Total Return Swap Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_TotalReturnSwapRiskMember" xlink:to="lab_cik0000908187_TotalReturnSwapRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_USGovernmentSecuritiesRiskMember" xlink:label="loc_cik0000908187_USGovernmentSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_USGovernmentSecuritiesRiskMember" xml:lang="en-US">US Government Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_USGovernmentSecuritiesRiskMember" xlink:to="lab_cik0000908187_USGovernmentSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_ValuationRiskMember" xlink:label="loc_cik0000908187_ValuationRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_ValuationRiskMember" xml:lang="en-US">Valuation Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_ValuationRiskMember" xlink:to="lab_cik0000908187_ValuationRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" xlink:label="loc_cik0000908187_ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" xml:lang="en-US">Zero Coupon Bond Step Ups and Payment In Kind Securities Risk [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" xlink:to="lab_cik0000908187_ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" />
          <link:loc xlink:type="locator" xlink:href="cik0000908187-20260630.xsd#cik0000908187_CommonSharesMember" xlink:label="loc_cik0000908187_CommonSharesMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0000908187_CommonSharesMember" xml:lang="en-US">Common Shares [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cik0000908187_CommonSharesMember" xlink:to="lab_cik0000908187_CommonSharesMember" />
        </link:labelLink>
      </link:linkbase>
    </appinfo>
  </annotation>
  <import namespace="http://xbrl.sec.gov/cef/2026" schemaLocation="https://xbrl.sec.gov/cef/2026/cef-2026.xsd" />
  <import namespace="http://xbrl.sec.gov/cef-pre/2026" schemaLocation="https://xbrl.sec.gov/cef/2026/cef-2026_pre.xsd" />
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" />
  <element name="AssetAllocationRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_AssetAllocationRiskMember" substitutionGroup="xbrli:item" />
  <element name="CallRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CallRiskMember" substitutionGroup="xbrli:item" />
  <element name="CollateralizedBondObligationsCollateralizedLoanObligationsAndCollateralizedDebtObligationsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CollateralizedBondObligationsCollateralizedLoanObligationsAndCollateralizedDebtObligationsRiskMember" substitutionGroup="xbrli:item" />
  <element name="ConfidentialInformationAccessRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ConfidentialInformationAccessRiskMember" substitutionGroup="xbrli:item" />
  <element name="ContingentConvertibleSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ContingentConvertibleSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="ConvertibleSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ConvertibleSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="CorporateDebtSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CorporateDebtSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="CounterpartyRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CounterpartyRiskMember" substitutionGroup="xbrli:item" />
  <element name="CovenantLiteObligationsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CovenantLiteObligationsRiskMember" substitutionGroup="xbrli:item" />
  <element name="CreditDefaultSwapsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CreditDefaultSwapsRiskMember" substitutionGroup="xbrli:item" />
  <element name="CreditRisksMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CreditRisksMember" substitutionGroup="xbrli:item" />
  <element name="CurrencyRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CurrencyRiskMember" substitutionGroup="xbrli:item" />
  <element name="CyberSecurityRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CyberSecurityRiskMember" substitutionGroup="xbrli:item" />
  <element name="DebtSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_DebtSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="DerivativesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_DerivativesRiskMember" substitutionGroup="xbrli:item" />
  <element name="DistressedAndDefaultedSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_DistressedAndDefaultedSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="DistributionRateRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_DistributionRateRiskMember" substitutionGroup="xbrli:item" />
  <element name="EmergingMarketsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_EmergingMarketsRiskMember" substitutionGroup="xbrli:item" />
  <element name="EquitySecuritiesAndRelatedMarketRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_EquitySecuritiesAndRelatedMarketRiskMember" substitutionGroup="xbrli:item" />
  <element name="FocusedInvestmentRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_FocusedInvestmentRiskMember" substitutionGroup="xbrli:item" />
  <element name="ForeignNonUSGovernmentSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ForeignNonUSGovernmentSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="ForeignNonUSInvestmentRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ForeignNonUSInvestmentRiskMember" substitutionGroup="xbrli:item" />
  <element name="HighYieldSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_HighYieldSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="IndustrySpecificRisksMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_IndustrySpecificRisksMember" substitutionGroup="xbrli:item" />
  <element name="InflationIndexedSecurityRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_InflationIndexedSecurityRiskMember" substitutionGroup="xbrli:item" />
  <element name="InflationOrDeflationRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_InflationOrDeflationRiskMember" substitutionGroup="xbrli:item" />
  <element name="InsuranceLinkedAndOtherInstrumentsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_InsuranceLinkedAndOtherInstrumentsRiskMember" substitutionGroup="xbrli:item" />
  <element name="IssuerRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_IssuerRiskMember" substitutionGroup="xbrli:item" />
  <element name="LeverageRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_LeverageRiskMember" substitutionGroup="xbrli:item" />
  <element name="LiquidityRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_LiquidityRiskMember" substitutionGroup="xbrli:item" />
  <element name="LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_LoansandOtherIndebtednessLoanAcquisitionsParticipationsandAssignmentsRiskMember" substitutionGroup="xbrli:item" />
  <element name="ManagementRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ManagementRiskMember" substitutionGroup="xbrli:item" />
  <element name="MarketDiscountRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_MarketDiscountRiskMember" substitutionGroup="xbrli:item" />
  <element name="MarketDisruptionsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_MarketDisruptionsRiskMember" substitutionGroup="xbrli:item" />
  <element name="MarketRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_MarketRiskMember" substitutionGroup="xbrli:item" />
  <element name="MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_MortgageRelatedAndOtherAssetBackedInstrumentsRiskMember" substitutionGroup="xbrli:item" />
  <element name="MortgageRelatedDerivativeInstrumentsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_MortgageRelatedDerivativeInstrumentsRiskMember" substitutionGroup="xbrli:item" />
  <element name="MunicipalBondRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_MunicipalBondRiskMember" substitutionGroup="xbrli:item" />
  <element name="OperationalRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_OperationalRiskMember" substitutionGroup="xbrli:item" />
  <element name="OtherInvestmentCompaniesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_OtherInvestmentCompaniesRiskMember" substitutionGroup="xbrli:item" />
  <element name="PortfolioTurnoverRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_PortfolioTurnoverRiskMember" substitutionGroup="xbrli:item" />
  <element name="PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_PotentialConflictsOfInterestRiskAllocationOfInvestmentOpportunitiesMember" substitutionGroup="xbrli:item" />
  <element name="PreferredSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_PreferredSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="PrivacyAndDataSecurityRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_PrivacyAndDataSecurityRiskMember" substitutionGroup="xbrli:item" />
  <element name="PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_PrivatelyIssuedMortgageRelatedSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="PrivatePlacementsAndRestrictedSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_PrivatePlacementsAndRestrictedSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="RealEstateRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_RealEstateRiskMember" substitutionGroup="xbrli:item" />
  <element name="RegulationSSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_RegulationSSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="RegulatoryChangesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_RegulatoryChangesRiskMember" substitutionGroup="xbrli:item" />
  <element name="RegulatoryRiskCommodityPoolOperatorMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_RegulatoryRiskCommodityPoolOperatorMember" substitutionGroup="xbrli:item" />
  <element name="ReinvestmentRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ReinvestmentRiskMember" substitutionGroup="xbrli:item" />
  <element name="REITRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_REITRiskMember" substitutionGroup="xbrli:item" />
  <element name="RepurchaseAgreementsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_RepurchaseAgreementsRiskMember" substitutionGroup="xbrli:item" />
  <element name="RiskRetentionInvestmentRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_RiskRetentionInvestmentRiskMember" substitutionGroup="xbrli:item" />
  <element name="SecuritiesLendingRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_SecuritiesLendingRiskMember" substitutionGroup="xbrli:item" />
  <element name="SeniorDebtRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_SeniorDebtRiskMember" substitutionGroup="xbrli:item" />
  <element name="ShortExposureRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ShortExposureRiskMember" substitutionGroup="xbrli:item" />
  <element name="SmallerCompanyRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_SmallerCompanyRiskMember" substitutionGroup="xbrli:item" />
  <element name="SovereignDebtRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_SovereignDebtRiskMember" substitutionGroup="xbrli:item" />
  <element name="StructuredInvestmentsRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_StructuredInvestmentsRiskMember" substitutionGroup="xbrli:item" />
  <element name="SubprimeRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_SubprimeRiskMember" substitutionGroup="xbrli:item" />
  <element name="SyntheticConvertibleSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_SyntheticConvertibleSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="TaxRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_TaxRiskMember" substitutionGroup="xbrli:item" />
  <element name="TotalReturnSwapRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_TotalReturnSwapRiskMember" substitutionGroup="xbrli:item" />
  <element name="USGovernmentSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_USGovernmentSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="ValuationRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ValuationRiskMember" substitutionGroup="xbrli:item" />
  <element name="ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_ZeroCouponBondStepUpsandPaymentInKindSecuritiesRiskMember" substitutionGroup="xbrli:item" />
  <element name="CommonSharesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="cik0000908187_CommonSharesMember" substitutionGroup="xbrli:item" />
</schema>
