異步

异 = 巳 + 廾 : Maud Younger sees a wyvern in the space station's bathroom and thinks it's soo strange that there's a wyvern in the space station. But after all, it's just the lab snake which ate a double axe.

異 = 共 + 田 : Maud Younger (y) has been sent off to help the communist (共) tending the field (田) in the space station's bathroom (Ø4). She proves very helpful as her secret strange super power (mnemonic symbol for 異), xray vision, helps her see whether the potatoes are ready or not.

步 = 止 + 丨 + 丶 + 丿 : Mnemonic symbol: a five-paced viper, 五步蛇.

Bruno Bear (bu) was strolling (步) around the space station's bathroom (Ø4) with a dinosaur bone (丨) as walking (步) stick in his hands. He disregarded the barrier (止) marking the wild, forbidden area lightheartedly and just jumped over it whistling a joyful tune. But shortly afterwards he made a terrible realization: only five paces (步)away there was a five-paced viper (步) hiding under a petal leaf (丶)! Bruno knew the viper was after him, so he tried to keep it at distance using his dinosaur bone and feeding it bananas (丿) while at the same time slowly backing up to the barrier.