Re: *m for 1st & *t for 2nd person in PIE and Proto-Uralic

> > In Greenberg's "IE and its Closest Relatives", he reports 1st
> > pers. 'm' "in every subgroup except Ainu", which I take it means in
> > IE, Uralic, Altaic, Gilyak, Korean-Jap.-Ainu, Chukotian, and Esk-
> > Aleut. Even if he's wrong about half, that's too many for borrowing.
> > 2nd person *t- is not quite so universal, but widespread also.

So the *m- as 1st person is from some very, very early proto-language,
and *t- is from a later proto-language. Now, which proto-language might
PIE be closest related to?

> Tocharian A has 3rd person -m, perhaps from the
> same suffix? There are supposedly loans from Tocharian in Finno-
> Ugric.

Tocharian, I've read, was also very influenced by Finno-Ugric. Their
sound system was simplified through that interaction.