Proto-Slavic *-ъkъ

→ Belarusian яркі (mention)

→ Bulgarian войник (mention)

→ Czech -ek (inherited)

→ Northern Kurdish -î (cognate)

→ Lithuanian -iukas (cognate)

→ Polish -ek (inherited)

→ Russian яркий (mention)

→ Russian чеснок (affix)

→ Russian венок (mention)

→ Russian -кий (mention)

→ Serbo-Croatian -ak (inherited)

→ Serbo-Croatian -ак (inherited)