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    <link:label id="lab_us-gaap_DerivativeCollateralRightToReclaimSecurities_709b0b01-191d-4e60-8490-3d471ae86c4b_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativeCollateralRightToReclaimSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financial Instruments</link:label>
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    <link:label id="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome_fb08b73e-6639-417b-9ab7-3c0595bc169e_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Tax-exempt income</link:label>
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    <link:label id="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearFive_68916f18-a81a-46ec-b20e-8e53ebfc9c8e_terseLabel_en-US" xlink:label="lab_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearFive" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Four to Five Years</link:label>
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    <link:label id="lab_cfb_EquitySecuritiesFVNIAccumulatedGrossUnrealizedLoss_6fe37e76-dae1-4a26-aacc-ebdca56db711_terseLabel_en-US" xlink:label="lab_cfb_EquitySecuritiesFVNIAccumulatedGrossUnrealizedLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Gross Unrealized Losses</link:label>
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    <link:label id="lab_cfb_ReductionOfMonthlyPaymentMember_b2368180-ad47-43f1-bb34-9f610d686208_terseLabel_en-US" xlink:label="lab_cfb_ReductionOfMonthlyPaymentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reduction of Monthly Payment</link:label>
    <link:label id="lab_cfb_ReductionOfMonthlyPaymentMember_label_en-US" xlink:label="lab_cfb_ReductionOfMonthlyPaymentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reduction Of Monthly Payment [Member]</link:label>
    <link:label id="lab_cfb_ReductionOfMonthlyPaymentMember_documentation_en-US" xlink:label="lab_cfb_ReductionOfMonthlyPaymentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Reduction Of Monthly Payment [Member]</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_17373b7b-363d-4c3f-a9e6-e30298bbcf8b_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financing Receivable, Allowance for Credit Loss [Table]</link:label>
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    <link:label id="lab_us-gaap_FinanceReceivablesMember_a765b8b4-0a63-4266-a7e1-08af2d7cd440_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceReceivablesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Financing Receivable</link:label>
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    <link:label id="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_9687fefe-5bc0-4ca8-a77a-953a030d8f75_totalLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_b80139ad-f333-47b3-beb0-87a2301fe9c9_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Beginning balance (in dollars per share)</link:label>
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    <link:label id="lab_us-gaap_BankOwnedLifeInsurance_f239e79d-50dc-454e-aa80-0b206469c38e_terseLabel_en-US" xlink:label="lab_us-gaap_BankOwnedLifeInsurance" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Bank-owned life insurance</link:label>
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    <link:label id="lab_cfb_RepossessedAssetsHeldForSale_7736f2e5-799c-4e1a-a59d-54133199ae1d_terseLabel_en-US" xlink:label="lab_cfb_RepossessedAssetsHeldForSale" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Foreclosed assets held for sale</link:label>
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    <link:label id="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment_98d46ad0-c1d2-43a8-b762-a71877ba7931_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Total average impaired loans</link:label>
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    <link:label id="lab_us-gaap_GainLossOnInvestments_0c3b8c9c-d812-4f59-a3bd-c9c28b66164b_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Gain on sale of available-for-sale debt securities</link:label>
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    <link:label id="lab_us-gaap_DeferredTaxAssetsLiabilitiesNet_ce11bc8f-c103-4a7b-ace0-95fe7af95570_totalLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Net deferred tax asset</link:label>
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    <link:label id="lab_us-gaap_NotesReceivableNet_b7d76d3f-0d9c-4c09-b16e-c70c72186672_terseLabel_en-US" xlink:label="lab_us-gaap_NotesReceivableNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en-US">Loans, net of allowance for loan losses of $51,458 and $56,896 at March 31, 2020 and December 31, 2019, respectively</link:label>
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