Prefixes starting with <O'>
<O'B>
.
<O'C>
.
<O'D>
.
<O'F>
.
<O'G>
.
<O'H>
.
<O'K>
.
<O'L>
.
<O'M>
.
<O'N>
.
<O'P>
.
<O'R>
.
<O'S>
.
<O'> (other)
.