>.</span><span class="n">_Database</span><span class="p">:</span>
                <span class="k">if</span> <span class="nb">set</span><span class="p">(</span><span class="n">j</span><span class="p">)</span><span class="o">.</span><span class="n">issubset</span><span class="p">(</span><span class="n">i</span><span class="p">):</span>
                    <span class="n">count</span> <span class="o">+=</span> <span class="mi">1</span>
                    <span class="n">items</span><span class="o">.</span><sp