pan class="bp">self</span><span class="o">.</span><span class="n">eq_in</span><span class="p">(</span><span class="n">r</span><span class="p">):</span>
          <span class="n">perm</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">eq_index</span><span class="p">(</span><span class="n">r</span><span class="p">))</span>
        <span class="k">else</span><span class="p">:</span>
          <span class="n">war