From: Miguel Carrasquer
>I'm still thinking about the supposed accent on *u in the variantAs long as they are monosyllabic. *dwo: and *duwo: are called "Lindeman
>*kúwo:n. Yet with *dúwo:-, it becomes a little more suspect as
>evidence for Piotr's case. Is it possible that this is just a rule
>affecting nouns starting in Cw- where C is any stop?