1. hlanah, hlan lio ah; e.g. I once attended that school = Khi sianginn ah khin hlanah ka rak kai bal.
2. voi khat; e.g. January 1 occurs once a year; e.g. January thla ni khat cu kum khat ah voi khat lawng a um.
once upon a time = Hlanliopi ah hin.