<span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">non</span><span class="o">-</span><span class="n">negative</span><span class="w"> </span><span class="n">value</span>
<span class="w">       </span><span class="n">to</span><span class="w"> </span><span class="n">start</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">new</span><span class="w"> </span><span class="n">sequence</span><span class="w"> </span><span class="n">of</sp