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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E12">Th12</font></span>: <a NAME="T12"><span class="comment"><font color="firebrick">:: MSAFREE4:12</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">t1</font>, <font color="Olive" title="b2">t2</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a>  st <font color="Olive" title="b1">t1</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="trees_9.html#K3" title="TREES_9:func.3">Subtrees</a> <font color="Olive" title="b2">t2</font> holds <br/> <a href="trees_9.html#K3" title="TREES_9:func.3">Subtrees</a> <font color="Olive" title="b1">t1</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="trees_9.html#K3" title="TREES_9:func.3">Subtrees</a> <font color="Olive" title="b2">t2</font></div></div>
