s2">&quot;S&quot;</span><span class="p">]])</span>

            <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">neighbors</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> <span class="o">==</span> <span class="mi">4</span> <span class="ow">and</span> <span class="n">ons</span> <span class="o">&gt;=</span> <span class="mi">2</span><span class="p">:</span>
                <span class="n">specials</span><span class="o">.</span><spa