a-b-c-d-e-f-g-h-i-j-k-l-m-n-o-p-q-r-s-t-u-v-w-x-y-z&quot;</span></span>
<span id="cb28-4"><a href="#cb28-4" tabindex="-1"></a></span>
<span id="cb28-5"><a href="#cb28-5" tabindex="-1"></a><span class="co"># stringr</span></span>
<span id="cb28-6"><a href="#cb28-6" tabindex="-1"></a><span class="fu">str_flatten</span>(letters, <span class="at">collapse =</span> <span class="st">&quot;-&quot;</span>)</span>
<span id="cb28-7"><a href="#cb28-7" tabindex="-1"></a><span class="co">#&gt; [1] &quot;a-b-c-d-e-f-g-h-