Proto-Indo-European Roots

Root/Stem:	*wé-, wei-
Meanings:	we, us
Related to:	Greek - not found, replaced by 'hmeis; Homer also uses several forms with n- cognate to Celto-Italic
	Italic - not found, replaced by nos, nob-
	Common Celtic - not found, replaced by *s-nés, cognate to Italic
	Tocharic wes - we; wu (masc.), we (fem.) - we two
	Avestan vá - we two, vaém - we
	Sanskrit vayam - we
	Albanian - not found, replaced by ne, cognate to Italo-Celtic
	Hittite wes' - we
	Common Germanic *wetu, *witu - we two, *wé - we; >  Gothic wit, Old English wit - we two  Old English wé - we, Old Norse ver
	Common Baltic *vedu - we two, Lithuanian vedu (fem) - we two
	Common Slavic *vé - we two, Czech ve
Notes:	It seems that there were two different stems in Proto-Indo-European for this personal pronoun "we". They were *mes (preserved in Slavic, Baltic, Armenian, partly in Celtic), and this *wei-. Their difference is not clear yet, but some linguists suggest that *wei- denoted "we, me and you", while *mes meant "we, me and him".  According to such a distinction, the first was called inclusive, the second exclusive personal pronoun. First all Indo-European dialects kept and used both stems, but then the category inclusiveness disappears, and languages had to choose between two variants for "we". Slavic and Baltic acquired both - the first for dual, the second for plural.  The third stem, maybe just dialectal, which did not exist in the Proto-language, is *ne-, no-, seen in Italic, Celtic, Albanian and in several Germanic languages.