tion-class.html">Combination</a></span> <span class="parameter-name">combination</span>, </span> <span class="parameter" id="-param-front"><span class="type-annotation">List<span class="signature">&lt;<wbr><span class="type-parameter">String</span>&gt;</span></span> <span class="parameter-name">front</span>, </span> <span class="parameter" id="-param-back"><span class="type-annotation">List<span class="signature">&lt;<wbr><span class="type-parameter">String</span>&gt;</span></span> <span class="parameter-na