/span>(sentences), <span class="at">pattern =</span> noun)</span>
<span id="cb15-21"><a href="#cb15-21" tabindex="-1"></a><span class="co">#&gt;      [,1]        [,2]  [,3]   </span></span>
<span id="cb15-22"><a href="#cb15-22" tabindex="-1"></a><span class="co">#&gt; [1,] &quot;The birch&quot; &quot;The&quot; &quot;birch&quot;</span></span>
<span id="cb15-23"><a href="#cb15-23" tabindex="-1"></a><span class="co">#&gt; [2,] &quot;the sheet&quot; &quot;the&quot; &quot;sheet&quot;</span></span>
<span id="cb15