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  <xsd:element name="NumberOfUnitsPerBasket" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="usl_NumberOfUnitsPerBasket" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_FeePaidPerOrder" name="FeePaidPerOrder" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element name="UnitsIssuedDuringPeriodUnitsNewIssues" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_UnitsIssuedDuringPeriodUnitsNewIssues" substitutionGroup="xbrli:item" />
  <xsd:element name="UnitsIssuedDuringPeriodValueNewIssues" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_UnitsIssuedDuringPeriodValueNewIssues" substitutionGroup="xbrli:item" xbrli:balance="credit" />
  <xsd:element id="usl_NumberOfRegisteredUnits" name="NumberOfRegisteredUnits" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="SignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_SignificantAccountingPoliciesTable" substitutionGroup="xbrldt:hypercubeItem" />
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  <xsd:element name="BaseFeePercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_BaseFeePercentage" substitutionGroup="xbrli:item" />
  <xsd:element name="PercentageOfAverageDailyNetAssets" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="usl_PercentageOfAverageDailyNetAssets" substitutionGroup="xbrli:item" />
  <xsd:element name="CommissionsPaid" type="srt-types:perUnitItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_CommissionsPaid" substitutionGroup="xbrli:item" />
  <xsd:element name="MarketingAgreementMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_MarketingAgreementMember" substitutionGroup="xbrli:item" />
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  <xsd:element id="usl_RateOfReturnOnAverageAsset" name="RateOfReturnOnAverageAsset" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AverageNetAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_AverageNetAssetsAbstract" substitutionGroup="xbrli:item" />
  <xsd:element name="PercentageOfTotalRevenue" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_PercentageOfTotalRevenue" substitutionGroup="xbrli:item" />
  <xsd:element name="ManagementIncentiveFeePercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_ManagementIncentiveFeePercentage" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_ExpensesExcludingManagementFeePercentage" name="ExpensesExcludingManagementFeePercentage" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PercentageOfConsolidatedNetIncomeLoss" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_PercentageOfConsolidatedNetIncomeLoss" substitutionGroup="xbrli:item" />
  <xsd:element name="TotalExpensesPerUnit" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_TotalExpensesPerUnit" substitutionGroup="xbrli:item" />
  <xsd:element name="IncreaseDecreaseInNetAssetValuePerUnit" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_IncreaseDecreaseInNetAssetValuePerUnit" substitutionGroup="xbrli:item" />
  <xsd:element name="TotalIncomeLossPerUnit" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="usl_TotalIncomeLossPerUnit" substitutionGroup="xbrli:item" />
  <xsd:element name="ClosedPositionsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_ClosedPositionsMember" substitutionGroup="xbrli:item" />
  <xsd:element name="OpenPositionMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="usl_OpenPositionMember" substitutionGroup="xbrli:item" />
  <xsd:element id="usl_PercentageOfManagementFeeInAverageDailyTotalNetAssets" name="PercentageOfManagementFeeInAverageDailyTotalNetAssets" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="usl_TotalExpenses" name="TotalExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="usl_CreationBasketsMember" name="CreationBasketsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DreyfusInstitutionalPreferredGovernmentMoneyMarketFundInstitutionalSharesMember" id="usl_DreyfusInstitutionalPreferredGovernmentMoneyMarketFundInstitutionalSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CashDepositsAndInvestmentsInTreasuries" id="usl_CashDepositsAndInvestmentsInTreasuries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="UnrealizedGainLossOnOpenCommodityFuturesContractsCurrentAndNoncurrent" id="usl_UnrealizedGainLossOnOpenCommodityFuturesContractsCurrentAndNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FairValueAssetAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" id="usl_FairValueAssetAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NetAssetValuePolicyTextBlock" id="usl_NetAssetValuePolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NumberOfOilFuturesContractsHeldDuringPeriod" id="usl_NumberOfOilFuturesContractsHeldDuringPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="PercentageOfTotalNetAssets" id="usl_PercentageOfTotalNetAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DirectorsFeesPayable" id="usl_DirectorsFeesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ComponentsOfCashAndCashEquivalentsAndEquityInTradingAccounts" id="usl_ComponentsOfCashAndCashEquivalentsAndEquityInTradingAccounts" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InvestmentSecondaryCategorization1Axis" id="usl_InvestmentSecondaryCategorization1Axis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InvestmentsBySecondaryCategorization1Domain" id="usl_InvestmentsBySecondaryCategorization1Domain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NonRule10b51ArrModifiedFlag" id="usl_NonRule10b51ArrModifiedFlag" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="Rule10b51ArrModifiedFlag" id="usl_Rule10b51ArrModifiedFlag" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NymexWtiCrudeOilFuturesClFebruary2026ContractsExpiringJanuary2026Member" id="usl_NymexWtiCrudeOilFuturesClFebruary2026ContractsExpiringJanuary2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="NymexWtiCrudeOilFuturesClApril2026ContractsExpiringMarch2026Member" id="usl_NymexWtiCrudeOilFuturesClApril2026ContractsExpiringMarch2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FinancialHighlightAbstract" id="usl_FinancialHighlightAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClMay2026ContractsExpiringApril2026Member" id="usl_NymexWtiCrudeOilFuturesClMay2026ContractsExpiringApril2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClJune2026ContractsExpiringMay2026Member" id="usl_NymexWtiCrudeOilFuturesClJune2026ContractsExpiringMay2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="NymexWtiCrudeOilFuturesClSeptember2026ContractsExpiringAugust2026Member" id="usl_NymexWtiCrudeOilFuturesClSeptember2026ContractsExpiringAugust2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClOctober2026ContractsExpiringSeptember2026Member" id="usl_NymexWtiCrudeOilFuturesClOctober2026ContractsExpiringSeptember2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClNovember2026ContractsExpiringOctober2026Member" id="usl_NymexWtiCrudeOilFuturesClNovember2026ContractsExpiringOctober2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClDecember2026ContractsExpiringNovember2026Member" id="usl_NymexWtiCrudeOilFuturesClDecember2026ContractsExpiringNovember2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="RangeOfAllowedChangeInNavComparedToBenchmarkPercentage" id="usl_RangeOfAllowedChangeInNavComparedToBenchmarkPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="InvestmentObjectiveThresholdAdjustmentOnAverageDailyPercentageChangeInPrice" id="usl_InvestmentObjectiveThresholdAdjustmentOnAverageDailyPercentageChangeInPrice" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NymexWtiCrudeOilFuturesClFebruary2027ContractsExpiringJanuary2027Member" id="usl_NymexWtiCrudeOilFuturesClFebruary2027ContractsExpiringJanuary2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClMarch2027ContractsExpiringFebruary2027Member" id="usl_NymexWtiCrudeOilFuturesClMarch2027ContractsExpiringFebruary2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClApril2027ContractsExpiringMarch2027Member" id="usl_NymexWtiCrudeOilFuturesClApril2027ContractsExpiringMarch2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClMay2027ContractsExpiringApril2027Member" id="usl_NymexWtiCrudeOilFuturesClMay2027ContractsExpiringApril2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClJune2027ContractsExpiringMay2027Member" id="usl_NymexWtiCrudeOilFuturesClJune2027ContractsExpiringMay2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NymexWtiCrudeOilFuturesClJuly2027ContractsExpiringJune2027Member" id="usl_NymexWtiCrudeOilFuturesClJuly2027ContractsExpiringJune2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
