 class="r-out co"><span class="r-pr">#&gt;</span> 9   X    o  X    o  X    o  o</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 10  X    o  X    o  X    o  o</span>
<span class="r-in"><span></span></span>
</code></pre></div>
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