Yakut буукуба

← Proto-Germanic *bōkôs (derived)

← Gothic 𐌱𐍉𐌺𐍉𐍃 (derived)

← Proto-Indo-European *bʰeh₂ǵoes (derived)

← Old East Slavic бꙋква (derived)

← Russian бу́ква (borrowed)

← Proto-Slavic *bùkъva (derived)