Proto-Slavic *sę

→ Belarusian -ся (inherited)

→ Belarusian вучыцца (mention)

→ Bulgarian се (inherited)

→ Bulgarian уча се (mention)

→ Czech se (inherited)

→ Old Church Slavonic сѧ (inherited)

→ Lower Sorbian se (inherited)

→ Macedonian се (inherited)

→ Polish się (inherited)

→ Russian -ся (inherited)

→ Russian учиться (mention)

→ Russian касаться (mention)

→ Russian ся (cognate)

→ Serbo-Croatian se (inherited)

→ Serbo-Croatian се (inherited)

→ Slovak sa (inherited)

→ Slovene se (inherited)

→ Ukrainian -ся (inherited)