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<b>reconsider </b><font color="Maroon">c<sub>4</sub></font> =  <a href="xboole_0.html#K1">{}</a>  as   <a href="graph_1.html#NM5">OrientedPath</a> of <font color="Maroon">c<sub>3</sub></font> <b>by </b><i><a class="txt" href="graph_1.html#E17"><i><font color="Green">Lemma14</font></i></a></i>;<br/>
<b>take </b>
<font color="Maroon">c<sub>4</sub></font>
;<br/>

<b>thus </b><a NAME="E2:29_1_1"/>
<font color="Maroon">c<sub>4</sub></font> is <a href="graph_1.html#V10" target="_self">cyclic</a>
 <b>by </b><i><a class="txt" href="graph_1.html#E21"><i><font color="Green">Lemma16</font></i></a></i>;<br/>


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