個案

个 = 丨 + 人 : Mnemonic symbol: Neanderthal Man (人). Neanderthal Man (人) needs to use the elevator's bathroom (e4) but it's occupied by Guy Fawkes (g), and there's only space for one individual (个). Impatiently Neanderthal Man knocks on the door using his dinosaur bone (丨).

案 = 安 + 木 : Albert Einstein (Ø) is being accused of being a counter revolutionary capitalist (案). He is restrained to a Christmas tree (木) in the anthill's bathroom (an4) by a safety belt (安) fixed to the tree and to his ankle so that he can't run away. Anyway he uses his time to have a close look at his file (案).