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<b>let </b><font color="Maroon">G</font> be   <a href="group_1.html#NM1">Group</a>;<br/><b>let </b><font color="Maroon">H1</font> be    <a href="group_2.html#M1">Subgroup</a> of <font color="Maroon">G</font>;<br/><b>let </b><font color="Maroon">H2</font> be    <a href="group_2.html#M1">Subgroup</a> of <font color="Maroon">G</font>;<br/>





<a NAME="E1:76"/>
( <font color="Maroon">H1</font> <a href="group_2.html#K9">/\</a> <font color="Maroon">H2</font> is    <a href="group_2.html#M1">Subgroup</a> of <font color="Maroon">H1</font> &amp; <font color="Maroon">H1</font> is    <a href="group_2.html#M1">Subgroup</a> of <font color="Maroon">H1</font> <a href="group_4.html#K8" target="_self">"\/"</a> <font color="Maroon">H2</font> )
 
<b>by </b><i>, <a class="ref" href="group_2.html#T106">GROUP_2:106</a></i>;<br/>
<b>hence </b><a NAME="E2:76"/>
<font color="Maroon">H1</font> <a href="group_2.html#K9">/\</a> <font color="Maroon">H2</font> is    <a href="group_2.html#M1">Subgroup</a> of <font color="Maroon">H1</font> <a href="group_4.html#K8" target="_self">"\/"</a> <font color="Maroon">H2</font>
 <b>by </b><i><a class="ref" href="group_2.html#T65">GROUP_2:65</a></i>;<br/>


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