/span>
<span class="w">                          </span><span class="n">ix</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">kx</span><span class="w"></span>
<span class="w">                          </span><span class="k">do </span><span class="n">k</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">kk</span><span class="p">,</span><span class="n">kk</span><span class="w"> </span><span class="o">-</span><span class="w"> 