From: Piotr Gasiorowski
> I was thinking that the main effect of the reduction would<potna> (var. of <potnia>) seems to be one, whereas <ekHidna> may
> have been to reduce simplex 3-syllable potnia to 2-syllable
> -potnja. While the cluster -tn- is not reduced in Greek,
> the cluster -tnj-, for all we know, *is*, to -jn-. I'm
> pretty sure there are no counterexamples.