fine_model_set.html">define_model_set</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>    A <span class="op">=</span> <span class="va">NL</span> <span class="op">~</span> <span class="va">BM</span>,</span></span>
<span class="r-in"><span>    B <span class="op">=</span> <span class="va">NL</span> <span class="op">~</span> <span class="va">LS</span>,</span></span>
<span class="r-in"><span>    .common <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" 