                  </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="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span><span class="n">kk</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><