<span class="w"> </span><span class="n">nm1</span>
<span class="w">               </span><span class="k">IF</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">X</span><span class="p">(</span><span class="n">i</span><span class="p">)</span><span class="o">==</span><span class="n">XS</span><span class="p">(</span><span class="n">j</span><span class="p">)</span><span class="w"> </span><span class="p">)</span><span class="w"> </span><span class="k">THEN</span>
<span cl