<?xml version="1.0" encoding="utf-8"?>
<!--XBRL International Financial Statement Taxonomy-->
<linkbase
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  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:xlink="http://www.w3.org/1999/xlink"
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      xlink:role="http://www.xbrl.org/2003/role/link"
      xlink:type="extended">
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
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          xlink:label="label_xii_CertificationRoyaltyReceivableCurrent"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Certification Royalty Receivable, Current</label>
        <label
          xlink:label="label_xii_CertificationRoyaltyReceivableCurrent"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of certification royalty receivable</label>
        <loc
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          xlink:label="xii_LiabilitiesAndNetAssets"
          xlink:type="locator"/>
        <labelArc
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_LiabilitiesAndNetAssets"
          xlink:to="label_xii_LiabilitiesAndNetAssets"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_LiabilitiesAndNetAssets"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Sum of Liabilities and Net Assets</label>
        <loc
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          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_SoftwareCertificationRevenue"
          xlink:to="label_xii_SoftwareCertificationRevenue"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_SoftwareCertificationRevenue"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Software Certification Revenue</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_UnrestrictedNetAssets"
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          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_UnrestrictedNetAssets"
          xlink:to="label_xii_UnrestrictedNetAssets"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_UnrestrictedNetAssets"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Unrestricted Net Assets</label>
        <loc
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          xlink:type="locator"/>
        <labelArc
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_MeetingExpense"
          xlink:to="label_xii_MeetingExpense"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_MeetingExpense"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Meeting Expense</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_BankCharges"
          xlink:label="xii_BankCharges"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_BankCharges"
          xlink:to="label_xii_BankCharges"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_BankCharges"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Bank Charges</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_AuditorReportTextBlock"
          xlink:label="xii_AuditorReportTextBlock"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_AuditorReportTextBlock"
          xlink:to="label_xii_AuditorReportTextBlock"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_AuditorReportTextBlock"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">The entire disclosure for Audit Report.</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_DocumentAndEntityInformationAbstract"
          xlink:label="xii_DocumentAndEntityInformationAbstract"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_DocumentAndEntityInformationAbstract"
          xlink:to="label_xii_DocumentAndEntityInformationAbstract"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_DocumentAndEntityInformationAbstract"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Document And Entity Information [Abstract]</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_IncreaseDecreaseInCertificationRoyaltyReceivable"
          xlink:label="xii_IncreaseDecreaseInCertificationRoyaltyReceivable"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_IncreaseDecreaseInCertificationRoyaltyReceivable"
          xlink:to="label_xii_IncreaseDecreaseInCertificationRoyaltyReceivable"
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        <label
          xlink:label="label_xii_IncreaseDecreaseInCertificationRoyaltyReceivable"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Increase (Decrease) in Certification Royalty Receivable</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_MaintenanceExpense"
          xlink:label="xii_MaintenanceExpense"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_MaintenanceExpense"
          xlink:to="label_xii_MaintenanceExpense"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_MaintenanceExpense"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Maintenance Expense</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_OperatingAndNonoperatingCostsAndExpenses"
          xlink:label="xii_OperatingAndNonoperatingCostsAndExpenses"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_OperatingAndNonoperatingCostsAndExpenses"
          xlink:to="label_xii_OperatingAndNonoperatingCostsAndExpenses"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_OperatingAndNonoperatingCostsAndExpenses"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Sum of program (operating) and support (non-operating) services cost.</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_IncreaseDecreaseInOtherDeferredCredits"
          xlink:label="xii_IncreaseDecreaseInOtherDeferredCredits"
          xlink:type="locator"/>
        <labelArc
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
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        <label
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          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of increase (decrease) in deferred credits classified as other.</label>
        <label
          xlink:label="label_xii_OperatingAndNonoperatingCostsAndExpenses"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Operating and Nonoperating Costs and Expenses</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_OperatingAndNonoperatingRevenue"
          xlink:label="xii_OperatingAndNonoperatingRevenue"
          xlink:type="locator"/>
        <labelArc
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_OperatingAndNonoperatingRevenue"
          xlink:to="label_xii_OperatingAndNonoperatingRevenue"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_OperatingAndNonoperatingRevenue"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Sum of operating and support revenue.</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_ConferenceRevenueNet"
          xlink:label="xii_ConferenceRevenueNet"
          xlink:type="locator"/>
        <labelArc
          order="1"
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_ConferenceRevenueNet"
          xlink:to="label_xii_ConferenceRevenueNet"
          xlink:type="arc"/>
        <label
          xlink:label="label_xii_ConferenceRevenueNet"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of conference revenue net of expenses.</label>
        <label
          xlink:label="label_xii_ConferenceRevenueNet"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Conference Revenue, Net</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_AuditorReportAbstract"
          xlink:label="xii_AuditorReportAbstract"
          xlink:type="locator"/>
        <labelArc
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_AuditorReportAbstract"
          xlink:to="label_xii_AuditorReportAbstract"
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        <label
          xlink:label="label_xii_AuditorReportAbstract"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Auditor Report [Abstract]</label>
        <label
          xlink:label="label_xii_AuditorReportTextBlock"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Auditor Report [Text Block]</label>
        <label
          xlink:label="label_xii_MaintenanceExpense"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of cost of website maintenance</label>
        <label
          xlink:label="label_xii_IncreaseDecreaseInCertificationRoyaltyReceivable"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of increase (decrease) in Royalty Receivable.</label>
        <label
          xlink:label="label_xii_MeetingExpense"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of cost of conducting meeting other than conference.</label>
        <label
          xlink:label="label_xii_UnrestrictedNetAssets"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of net assets that are not subject to donor-imposed stipulations are classified as unrestricted net assets</label>
        <label
          xlink:label="label_xii_BankCharges"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of cost of bank charges levied.</label>
        <loc
          xlink:href="xii-20180630.xsd#xii_StatementOfActivitiesAbstract"
          xlink:label="xii_StatementOfActivitiesAbstract"
          xlink:type="locator"/>
        <labelArc
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          xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label"
          xlink:from="xii_StatementOfActivitiesAbstract"
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          xlink:type="arc"/>
        <label
          xlink:label="label_xii_StatementOfActivitiesAbstract"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Statement of Activities [Abstract]</label>
        <label
          xlink:label="label_xii_OperatingAndNonoperatingRevenue"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Operating and Nonoperating Revenue</label>
        <label
          xlink:label="label_xii_LiabilitiesAndNetAssets"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Liabilities and Net Assets</label>
        <label
          xlink:label="label_xii_SoftwareCertificationRevenue"
          xlink:role="http://www.xbrl.org/2003/role/documentation"
          xlink:type="resource"
          xml:lang="en">Amount of software certification fees</label>
        <label
          xlink:label="label_xii_IncreaseDecreaseInOtherDeferredCredits"
          xlink:role="http://www.xbrl.org/2003/role/label"
          xlink:type="resource"
          xml:lang="en">Increase (Decrease) in Other Deferred Credits</label>
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