on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]
挨
āiㄞ
áiㄞˊ
lean to; in order; in sequence[cedict]
next to; suffer (hunger); endure; drag out; delay; stall; play for time[cedict]