伶牙俐齿

伶 = 亻 + 令 : Li Qingzhao (li) wants to enter engine, but Rosa Luxemburg (亻) won't let her pass the entrance ((e)ng2). Fortunately Li Qingzhao is clever (伶) enough to show Rosa Luxemburg her Ling Pai (令).

Mnemonic symbol: wisdom tooth. Maud Younger has a wisdom tooth removed just inside the ashram's kitchen.

俐 = 亻 + 利 : Because Rosa Luxemburg (亻) and Li Qingzhao (li) are so clever (俐) they were able to rebuild the Arianne rocket (利) in the space station's bathroom (Ø4).

齿 = 止 + 凵 + 人 : Charlie Chaplin (ch) has an aching tooth (齿), and Neanderthal Man (人) is about to help him take it out using an electrical barrier (止) in the space station (Ø3). They attached the barrier to the tooth and as Neanderthal Man will plug it into the receptacle (凵), the barrier will pull out the tooth.