pan class="r-pr">#&gt;</span> 2   o  o  o  o</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 12  X  X  X  X</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3   o  o  o  o</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 13  X  X  X  X</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4   o  o  o  o</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5   o  o  o  o</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6   o  o  o  o</span