n class="s1">&#39; &#39;</span>

       <span class="n">i2lo</span> <span class="o">=</span> <span class="nb">max</span> <span class="p">(</span> <span class="n">ilo</span><span class="p">,</span> <span class="mi">1</span> <span class="p">)</span>
       <span class="n">i2hi</span> <span class="o">=</span> <span class="nb">min</span> <span class="p">(</span> <span class="n">ihi</span><span class="p">,</span> <span class="n">m</span> <span class="p">)</span>

       <span class="k">do </span><span class="n">