pan>
<span id="cb14-24"><a href="#cb14-24" tabindex="-1"></a><span class="co">#&gt; [1] &quot;4&quot;  NA   &quot;10&quot; &quot;2&quot;</span></span>
<span id="cb14-25"><a href="#cb14-25" tabindex="-1"></a><span class="fu">str_extract_all</span>(shopping_list, <span class="st">&quot;[a-z]+&quot;</span>)</span>
<span id="cb14-26"><a href="#cb14-26" tabindex="-1"></a><span class="co">#&gt; [[1]]</span></span>
<span id="cb14-27"><a href="#cb14-27" tabindex="-1"></a><span class="co">#&gt; [1] &quot;apples&quot