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<b>take </b><font color="Maroon">c<sub>2</sub></font> =  <a href="pre_topc.html#K1">{}</a> <font color="Maroon">c<sub>1</sub></font>;<br/>

<b>thus </b><a NAME="E1:78_1_1"/>
<font color="Maroon">c<sub>2</sub></font> is <a href="isomichi.html#V3" target="_self">1st_class</a>
 ;<br/>


</div>
