d</span><br>
&nbsp;&nbsp;<span class="keyword">module</span>&nbsp;<span class="constructor">Array3</span>&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">sig</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">type</span>&nbsp;(<span class="keywordsign">'</span>a,&nbsp;<span class="keywordsign">'</span>b,&nbsp;<span class="keywordsign">'</span>c)&nbsp;t<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;create&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs