an class="keyword">end</span></code></div><div class="spec module" id="module-BasicCostWithReason"><a href="#module-BasicCostWithReason" class="anchor"></a><code><span class="keyword">module</span> <a href="BasicCostWithReason/index.html">BasicCostWithReason</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-VariantCostMap"><a href="#module-VariantCostMap" class="anchor"></a><code><span class="keyword">module</span> <a href="VariantCos