"      "qe_01"      "ve_01"      "qa_02"      "va_02"     </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [66] "qc_02"      "vc_02"      "qe_02"      "ve_02"      "qa_03"     </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [71] "va_03"      "qc_03"      "vc_03"      "qe_03"      "ve_03"     </span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  [76] "qa_04"      "va_04"      "qc_04"      "vc_04"      "qe_04"     </span>
<span class="r-out co"><span class="r-pr">#&gt;