="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="va">LETTERS</span><span class="op">[</span><span class="fl">1</span><span class="op">:</span><span class="fl">5</span><span class="op">]</span>, times <span class="op">=</span> <span class="fl">10</span><span class="op">)</span>,</span>
<span>            input <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/stats/Uniform.html" class="extern