On the Unicode public mailing list, James E. Agenbroad <jage@...> wrote:

> In the chapter on Tibetan in Daniels and Bright's The world's writing
> systems (page 434) about prescript symbols: "There are six radicals that
> never occur with a prescript: wa, ra, la, ha, and 'a chung." Does anyone
> know what the sixth one is or should it be "five"? Thanks in advance.
>
> Regards,
> Jim Agenbroad ( jage@... )
> The above are purely personal opinions, not necessarily the
> official views of any government or any agency of any.
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