pan class="r-out co"><span class="r-pr">#&gt;</span> 2  X1Y0       XY     3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3  X0Y1       XY     3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4  X1Y1       XY     0</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="co"># }</span></span></span>
<span class="r-in"><span></span></span>
</code></pre></div>
    </div>
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