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    <link:label id="lab_cmpr_November142017authorizationMember_D4236E8C2BCF23FC9B8D7202E0D88F77_terseLabel_en-US" xlink:label="lab_cmpr_November142017authorizationMember_D4236E8C2BCF23FC9B8D7202E0D88F77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">November 14, 2017 authorization [Member]</link:label>
    <link:label id="lab_cmpr_November142017authorizationMember_D4236E8C2BCF23FC9B8D7202E0D88F77_label_en-US" xlink:label="lab_cmpr_November142017authorizationMember_D4236E8C2BCF23FC9B8D7202E0D88F77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">November 14, 2017 authorization [Member]</link:label>
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    <link:loc xlink:href="cmpr-20190630.xsd#cmpr_November142017authorizationMember" xlink:label="loc_cmpr_November142017authorizationMember_D4236E8C2BCF23FC9B8D7202E0D88F77" xlink:type="locator" />
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    <link:label id="lab_cmpr_February122019authorizationMember_31B9DCF32F9DD467BB367202E0D87884_terseLabel_en-US" xlink:label="lab_cmpr_February122019authorizationMember_31B9DCF32F9DD467BB367202E0D87884" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">February 12, 2019 authorization [Member]</link:label>
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    <link:loc xlink:href="cmpr-20190630.xsd#cmpr_February122019authorizationMember" xlink:label="loc_cmpr_February122019authorizationMember_31B9DCF32F9DD467BB367202E0D87884" xlink:type="locator" />
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    <link:label id="lab_dei_EntityDomain_101190A76A7B651653897202E0D94CDF_label_en-US" xlink:label="lab_dei_EntityDomain_101190A76A7B651653897202E0D94CDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_101190A76A7B651653897202E0D94CDF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PlanNameAxis_C2B1609EDE2420F4964F7202E0DA1CDE_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_C2B1609EDE2420F4964F7202E0DA1CDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:label id="lab_us-gaap_PlanNameAxis_C2B1609EDE2420F4964F7202E0DA1CDE_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_C2B1609EDE2420F4964F7202E0DA1CDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_C2B1609EDE2420F4964F7202E0DA1CDE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PlanNameDomain_A652177A6E0BBC0A455F7202E0DBFEA2_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_A652177A6E0BBC0A455F7202E0DBFEA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:label id="lab_us-gaap_PlanNameDomain_A652177A6E0BBC0A455F7202E0DBFEA2_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_A652177A6E0BBC0A455F7202E0DBFEA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
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    <link:label id="lab_cmpr_RestrictedshareunitsMember_A06F62D16419BC27D8387202E0DB669C_terseLabel_en-US" xlink:label="lab_cmpr_RestrictedshareunitsMember_A06F62D16419BC27D8387202E0DB669C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted share units [Member]</link:label>
    <link:label id="lab_cmpr_RestrictedshareunitsMember_A06F62D16419BC27D8387202E0DB669C_label_en-US" xlink:label="lab_cmpr_RestrictedshareunitsMember_A06F62D16419BC27D8387202E0DB669C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted share units [Member]</link:label>
    <link:label id="lab_cmpr_RestrictedshareunitsMember_A06F62D16419BC27D8387202E0DB669C_documentation_en-US" xlink:label="lab_cmpr_RestrictedshareunitsMember_A06F62D16419BC27D8387202E0DB669C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted share units [Member] - RSUs that generally vest over 2 years for non-employee directors and vest over 4 years for employees</link:label>
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    <link:label id="lab_cmpr_RestrictedShareAwardsMember_AD663B0F95106A664BA57202E0DB49FC_terseLabel_en-US" xlink:label="lab_cmpr_RestrictedShareAwardsMember_AD663B0F95106A664BA57202E0DB49FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Share Awards [Member]</link:label>
    <link:label id="lab_cmpr_RestrictedShareAwardsMember_AD663B0F95106A664BA57202E0DB49FC_label_en-US" xlink:label="lab_cmpr_RestrictedShareAwardsMember_AD663B0F95106A664BA57202E0DB49FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Share Awards [Member]</link:label>
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    <link:label id="lab_cmpr_A2016PlanMember_4161AB3FD84EB58D7B137202E0DB3D2C_terseLabel_en-US" xlink:label="lab_cmpr_A2016PlanMember_4161AB3FD84EB58D7B137202E0DB3D2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016 Plan [Member]</link:label>
    <link:label id="lab_cmpr_A2016PlanMember_4161AB3FD84EB58D7B137202E0DB3D2C_label_en-US" xlink:label="lab_cmpr_A2016PlanMember_4161AB3FD84EB58D7B137202E0DB3D2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2016 Plan [Member]</link:label>
    <link:label id="lab_cmpr_A2016PlanMember_4161AB3FD84EB58D7B137202E0DB3D2C_documentation_en-US" xlink:label="lab_cmpr_A2016PlanMember_4161AB3FD84EB58D7B137202E0DB3D2C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2016 Plan [Member] - 2016 PSU plan approved by shareholders on May 27, 2016</link:label>
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