 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $l_starts</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> X Y </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1 3 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $l_ends</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> X Y </span>
<span class="r-out co"><span class