pan class="p">(</span><span class="n">hs</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">3</span><span class="p">:</span>
                    <span class="n">hs</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
                    <span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">hs</span><span class="p">)</span>

        <spa