4gaak jai 格仔 — [square] a way of censoring pornographic films and photos, in which the sex organs or taboo words are covered with a grid of squares (ad 20.8.2000, A11).
5gaak jí 格子 — a dwelling place, a house (OS).
6gaak sí 格氏 — [< karsi] a triad society, a triad group.