Interjection used to attract attention, call out to someone, or give a warning; also expresses surprise or dissatisfaction.

Used to express surprise or astonishment; also used when suddenly remembering something to tell someone.

Used to express dissatisfaction, disapproval, or disagreement.

Used to express regret, annoyance, or remorse.

A rhythmic filler used in the middle of a line to soften the tone, common in traditional Chinese opera lyrics

Used to signal agreement, acknowledgement, or a response to a call.