 class="fl">3</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">zm7</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq_len</a></span><span class="op">(</span><span class="fl">2</span><span class="op">)</span>, <span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq_len</a></span><span class="op">(</span><span class="fl">2</span><span class="op">)</span><span class="op">]</span>