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<b>consider </b><font color="Maroon">c<sub>1</sub></font> being    <a href="trees_4.html#M1">FinSequence</a> of  <a href="numbers.html#K5">NAT</a> ;<br/>
<b>take </b>
<font color="Maroon">c<sub>1</sub></font>
;<br/>

<b>thus </b><a NAME="E2:3_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="seqm_3.html#V6">natural-yielding</a>
 ;<br/>


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