>self</span><span class="o">.</span><span class="n">_tidList</span><span class="p">[</span><span class="n">itemI</span><span class="p">]</span>
            <span class="n">itemSetX</span> <span class="o">=</span> <span class="p">[</span><span class="n">itemI</span><span class="p">]</span>
            <span class="n">itemSets</span> <span class="o">=</span> <span class="p">[]</span>
            <span class="n">tidSets</span> <span class="o">=</span> <span class="p">[]</span>
            <span class="k">for</