勤奋刻苦

勤 = 力 + 堇 : The Queen of Hearts (qi) is very busy (勤) creating a fuse box out of violet dirt (堇) for the encampment's main power button (力) in the kitchen ((e)n2).

勤 = 力 + 堇 : The Queen of Hearts (qi) is very busy (勤) creating a fuse box out of violet dirt (堇) for the encampment's main power button (力) in the kitchen ((e)n2).

奋 = 大 + 田 : Frankensteins Monster (f) and the robot (大) are exerting themselves (奋) by working on a field (田) in the encampment's bathroom ((e)n4).

刻 = 亥 + 刂 : Mnemonic symbol: an engraver.

The boar cannot believe it when it meets Karl Marx in the elevator's bathroom! Bewildered it asks for an autograph but has nothing except for a kitchen knife and an engraver. It takes Karl Marx a quarter of an hour to engrave his message in the kitchen knife: "Dear boar, keep on fighting capitalism! Yours, Karl."

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.