PIE *HRH- > Grk. VRV-

Beekes:
"ere:mos `lonely, uninhabited, deserted', of places and things, people
and animals (Il.);
...the Greek form requires *h1reh1mos (zero grade would have given two
short vowels, cf. /onoma/);" [< *h3nh3mn.]


PIE *HRH > Greek. V-RV (two syllables, with 2 short vowels)

I would say that the PIE syllables were *h3.-nh3.-mn.
Otherwise:
1. a supposed : *h3n.-h3mn. didn't explain why h3mn. in place of the
expected h3m.n
2. a supposed : *h3n.h3-mn. didn't explain why we would have 3
syllables later from the initial two and especially why with such a
split : o-no-ma

I couldn't find until now such clear examples for Latin...

Marius