会則[kaisoku] society or club regulations
回線制御規則[kaisenseigyokisoku] line discipline
学則[gakusoku] school regulations
規則[kisoku] rules
規則を敗る[kisokuwoyaburu] to break the rules

規則正い[kisokutadashii] regular
規則的[kisokuteki] systematic
教則[kyousoku] rules of teaching
禁則[kinsoku] prohibition
原則[gensoku] principle

まっ四角[masshikaku] square
一天四海[ittenshikai] the world
下四半期[shimoshihanki] last quarter (of the year)
弦楽四重奏曲[gengakushijuusoukyoku] string quartet
再三再四[saisansaishi] repeatedly

三寒四温[sankanshion] alternation of three cold and four warm days
四つ[yottsu] four
四つんばい[yotsunbai] (crawl) on all fours
四つ角[yotsukado] four corners
四つ足[yotsuashi] four-footed (animal)