Proto-Indo-European *ḱom

→ Old Church Slavonic съ (inherited)

→ Old Church Slavonic съ- (inherited)

→ Welsh cymryd (derived)

→ Lower Sorbian z (inherited)

→ Lower Sorbian snědaś (derived)

→ Irish cuma (derived)

→ Hittite 𒃰𒋼𒊏𒀸 (link)

→ Polish z (inherited)

→ Russian с (inherited)

→ Russian с- (inherited)

→ Russian су- (inherited)

→ Rusyn зо (inherited)

→ Rusyn зо (inherited(rue/uk))

→ Old Irish cummae (derived)

→ Serbo-Croatian s (derived)

→ Serbo-Croatian с (inherited)

→ Slovene z (inherited)

→ Ukrainian з (inherited)

→ Middle Welsh kyf- (inherited)