等差数列

等 = ⺮ + 寺 : Inside of the engine, Don Quixote is praying in front of a Buddhist shrine. He brought a bamboo stick as offer, and he lighted it at the very top. Now he's waiting for the stick to burn down so he can go home. However, the stick is very long: Don Quixote will have to wait for a long time.

差 = 工 + 羊 : Charlie Chapling is juggling steel beams in front of the ashram. A sheep is making an error bar graph representing Charlie's number of tries to juggle as long as possible without letting the beams fall down.

数 = 娄 + 攵 : Sheldon Shrimp (shu) occupied a lunar mansion (娄) inside of the space station (Ø3) although he knows that it is to be torn down. Outside of his lunar mansion the construction (or rather destruction) workers are already counting (数) down from ten. When they count (数) zero, they will start taking down the whole thing with their sledgehammers (攵).

列 = 刂 + 歹 : Mnemonic symbol: archangel Gabriel, 加百列.

The apocalypse has come, and archangel Gabriel (列) came down from heaven with his list (列) of people who are accepted. In the elevator's bathroom (e4) he tells Li Qingzhao (li) that she's on his list, and he tells the wicked witch (歹) that she's not. The wicked witch freaks out and takes Li Qingzhao as her hostage holding a kitchen knife (刂) to Qingzhao's throat.