els</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;d2w_f&#39;</span><span class="p">,</span><span class="s1">&#39;d2w_d&#39;</span><span class="p">,</span><span class="s1">&#39;d2w_2d&#39;</span><span class="p">,</span><span class="s1">&#39;d2w_r&#39;</span><span class="p">,</span><span class="s1">&#39;fck_f&#39;</span><span class="p">,</span><span class="s1">&#39;fck_d&#39;</span><span class="p">,</span><span class="s1">&#39;fck_2d&#39;</span><span class="p">,</span><span cla