must

1. awk a si; e.g. Man must eat to live = Minungnih nunnak ah rawl a ei awk a si;
2. a si theu lai; e.g. I must have fallen asleep while you were out = Leng i na chuah karah khan ka rak i hngilh i a si theu lei;
3. cang theu lai; e.g. He must have arrived there by now = Atu cu khika ah a phan cang ttheu lai.