> >The old adjectival function would also(*h2ak^-
> >explain why all forms made with this /o/ are thematic.
> If the length in Grk. o:kus can be explained by the same procedure
> => *o-h2k^-u/r- > o:k^-u/r-), then not _all_.I am certainly open to new information about the prefixed/infixed