an class="op">+</span> <span class="va">z11</span>, 
                               lv <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html">list</a></span><span class="op">(</span>eta1 <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html">c</a></span><span class="op">(</span><span class="st">"z41"</span>, <span class="st">"z42"</span>, <span class="st">"z43"</span><span class="op">)</span><span class="op">)</span>, 
                              