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<a NAME="E1:14_1_1"/>
 <a href="scmfsa6c.html#K2">swap</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p4">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p5">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">c<sub>2</sub></font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="scmfsa6a.html#K7">';'</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">c<sub>2</sub></font></span>)</span></span>)</span> <a href="scmfsa6a.html#K6">';'</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="scmfsa_2.html#K8">:=</a> <span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">c<sub>2</sub></font></span>)</span></span>)</span></span>)</span></span>)</span>
 
<b>by </b><i><a class="ref" href="scmfsa6c.html#D4">SCMFSA6C:def 4</a></i>;<br/>
<b>hence </b><a NAME="E2:14_1_1"/>
 <a href="scmfsa6c.html#K2">swap</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> is <a href="scmfsa7b.html#V1">good</a>
 ;<br/>


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