s))</span>
<span id="cb15-13"><a href="#cb15-13" tabindex="-1"></a><span class="co">#&gt;      [,1]        [,2]  [,3]   </span></span>
<span id="cb15-14"><a href="#cb15-14" tabindex="-1"></a><span class="co">#&gt; [1,] &quot;The birch&quot; &quot;The&quot; &quot;birch&quot;</span></span>
<span id="cb15-15"><a href="#cb15-15" tabindex="-1"></a><span class="co">#&gt; [2,] &quot;the sheet&quot; &quot;the&quot; &quot;sheet&quot;</span></span>
<span id="cb15-16"><a href="#cb15-16" tabindex="-1"></a><span class="