0     B    1a</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                         4 10      1a       2                   0     B    1a</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                         3 11      1a       3                   0     B    1a</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                         4 12      1a       4                   1     B    1a</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                    