Prefixes starting with <Poly>
<Poly >
.
<PolyM>
.
<Polya>
.
<Polyc>
.
<Polyd>
.
<Polye>
.
<Polyg>
.
<Polym>
.
<Polyn>
.
<Polyp>
.
<Polys>
.
<Polyt>
.
<Polyu>
.
<Polyv>
.
<Poly> (other)
.