古

固 = 古 + 囗 : Gitta Giraffe is building a hard and solid stronghold inside the bathroom's space station. The stronghold consists of a cloister inside a wooden box.

枯 = 古 + 木 : Karl Koala (ku) is exploring a cloister (古) which appeared in front of the space station (Ø1). In the cloister he finds a Christmas tree (木), but it is stone old (古) and already extremely dried up (枯).

胡 = 古 + 月 : Helga Horse (hu) visits the old and wise moon (月) in the space station's kitchen (Ø2). She wants to join his cloister (古), but the moon rejects and says that first she has to get a very long Confucius style mustache (胡) such as his own.

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