Piotr said:
<Curiously, the collective suffix *-h2 also lengthens vowels in the same
<fashion, but final *-h2 can't have been voiced, judging from the fact
<that there is no o-colouring of the thematic vowel before it.
Isn't it possible to say that *-VCh2 > *-V:C
(dropping of *-h2 and compensatory lengthening) > *-V:Ch2 (analogical
restoring of *-h2 by analogy to *-eh2 etc.)?
Mate