 class="r-out co"><span class="r-pr">#&gt;</span> <span style="color: #BCBCBC;"> 2</span> ec'g'    4     <span style="color: #BB0000;">NA</span>    </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> <span style="color: #BCBCBC;"> 3</span> ec'g'    2     <span style="color: #BB0000;">NA</span>    </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> <span style="color: #BCBCBC;"> 4</span> c        4     <span style="color: #BB0000;">NA</span>    </span>
<span class="r-out co"><span class