不主故常

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

主 = 丶 + 王 : Julian Giant Squid (zhu) is playing cards with Martin Luther King (王) in the space station (Ø3). It's Martin Luther King's turn, and he holds a petal (丶) in his hand high above his head: it's his trump card, and on it depicted is the Lord (主) himself.

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.

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.

常 = 小 + 冖 + 吊 : Mnemonic symbol: the centennial light, a light bulb which will shine forever and ever.

常 = 小 + 冖 + 吊 : Charlie Chaplin is fighting his way through anglepod's underbrush with a coat hanger. The anglepod has not been visited in a hundred years, and with his coat hanger, Charlie Chaplin has to cut down a lot of daisies. Finally he found what he was looking for: the centennial light, protected from the daisies and the rain by a cooking top.