古

估 = 亻 + 古 : Gitta Giraffe (gu) is working as evaluator in front of the space station (Ø1). She has to evaluate a cloister (古) in which Rosa Luxemburg (亻) is meditating because some investors want to change it into a luxury hotel. Gitta knows that Rosa will not give up the cloister voluntarily and thus estimates (估) that it is not worth to try and evict the cloister.

克 = 儿 + 古 : Karl Marx and Sun Wukong both tried to change the world. After they both failed, they went crazy, and now they have to retreat into a cloister in the elevator's bathroom wearing straitjackets.

克 = 儿 + 古 : Mnemonic symbol: a straitjacket

辜 = 古 + 辛 : Gitta Giraffe (gu) is living in a cloister (古) in front of the space station (Ø1). In the cloister it is a crime (辜) to cook, distribute or eat kimchi (辛) because it excites the senses so much.

辜 = 古 + 辛 : Gitta Giraffe (gu) is living in a cloister (古) in front of the space station (Ø1). In the cloister it is a crime (辜) to cook, distribute or eat kimchi (辛) because it excites the senses so much.

故 = 古 + 攵 : There is an ancient cloister in the space station's bathroom, and Gitta Giraffe once heard a story from her fellow astronauts that there's an old tomb inside with lots of treasure. One day she can't hold herself back anymore and deliberately breaks the cloister open using a sledgehammer.

故 = 古 + 攵 : Mnemonic symbol: This character only appears in 做, so we don't need a strong mnemonic symbol. We should be able to refer to 故 when we think of 故事 or 故意. Because it fits nicely to its components, I'll think of it as in the meaning of 故墓, an old grave.

姑 = 古 + 女 : Gitta Giraffe (gu) and Bessie Coleman (女) have both decided to become nuns (姑). In front of the space station (Ø1) they are about to enter a secluded cloister (古).

苦 = 艹 + 古 : Karl Koala decided to repent for his sins and retreated into a cloister inside the space station. There he leads a very simple life full of hardship, e.g. he gave up on eucalyptus and just eats very bitter artificial lawn.