正比例

正 = 一 + 止 : Mnemonic symbol: a stick-figure with straight lines. James II of England (zh) really has to use the engine's bathroom ((e)ng4), but there's a stick-figure (正) blocking the stalls with a barrier (止). The stick-figure measures with a flute (一) whether James is tall enough to go. James stands very straight (正) to make himself as tall as possible.

比 = 七 + 匕 : Mnemonic symbol: from 比基尼, "bikini".

Brunhilde likes Leonidas' outfit, so she tries it for herself, wearing a bikini in the space station and wielding a ladle and a seven-branched laser sword.

例 = 亻 + 列 : Archangel Gabriel (列) set up a cardboard version of himself holding an engineer's scale (例) in his hands in the space station's bathroom. Next to the cardboard Gabriel is a speech bubble saying "you must be THIS tall to enter heaven". Gabriel set it up as an example (例) so that the people can check for themselves using the scale whether they are tall enough or not. Rosa Luxemburg (亻) and Li Qingzhao (li) frequently use this example to check if they are tall enough yet.