<keyword>and</keyword>
<keyword>as</keyword>
<keyword>coercion</keyword>
+ <keyword>nocomposites</keyword>
<keyword>coinductive</keyword>
<keyword>corec</keyword>
<keyword>default</keyword>
<keyword>symmetry</keyword>
<keyword>simplify</keyword>
<keyword>split</keyword>
- <keyword>subst</keyword>
<keyword>to</keyword>
<keyword>transitivity</keyword>
<keyword>unfold</keyword>