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<b>consider </b><font color="Maroon">p</font> being    <a href="trees_1.html#M1" target="_self">Element</a> of <font color="Maroon">T</font>;<br/>
<b>take </b>
<font color="Maroon">T</font> <a href="trees_1.html#K4" target="_self">|</a> <font color="Maroon">p</font>
;<br/>

<b>take </b>
<font color="Maroon">p</font>
;<br/>

<b>thus </b><a NAME="E2:49_1_1"/>
<font color="Maroon">T</font> <a href="trees_1.html#K4" target="_self">|</a> <font color="Maroon">p</font> <a href="hidden.html#R1">=</a> <font color="Maroon">T</font> <a href="trees_1.html#K4" target="_self">|</a> <font color="Maroon">p</font>
 ;<br/>


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