>paste0</a></span><span class="op">(</span><span class="st">"sp"</span>, <span class="fl">1</span><span class="op">:</span><span class="fl">4</span><span class="op">)</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">dense_comm</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>    sp1 sp2 sp3 sp4</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> g1   1   1   1   0</span>
<span class="r-out co"><span class="r-