From: P&G
Message: 25445
Date: 2003-08-31
>>*-oh3 is a standard reconstructionThe retention of the sequence -u: #a- in the dual in Sanskrit, but not in
> >of the PIE dual.
>
> If there is no evidence for *h3 attested, then it can't be a valid
> reconstruction, whether you deem it "standard" or not.
> The Common IE dual is in *-o:- (*h3 is not attested).