易北河

易 = 勿 + 日 : Mnemonic symbol: a really easy puzzle consisting of only two parts.

Maud Younger (y) and the sun (日) are trying to complete a really easy puzzle (易) in the space station's bathroom (Ø4). It's not as easy as they thought though, because in zero gravity they can only move with the help of their bat wings (勿).

北 = 丬 + 匕 : A compass rose. In the Eiffel Tower, Beelzebub tries to build a compass. As a baseplate he uses a piece of wood, on which he sticks the north pike of a compass rose. On the south pike he balances a ladle, which is supposed to adjust itself to earth's magnetic field.

河 = 可 + 氵 : A river has flooded the elevator, and in the kitchen, Hamlet is floating on a bed of nails. He found a water bottle to put upside down on the nails, so he has to balance on the bottle in order to not have to sit directly on the nails. It is quite difficult to do on a rocking makeshift raft.