an class="nb">range</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">itemsCount</span><span class="p">):</span>
            <span class="n">frequentSet</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_candidateToFrequent</span><span class="p">(</span><span class="n">items</span><span class="p">)</span>
            <span class="k">for</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</sp