寫下

写 = 冖 + 与 : Marie Curie (xi) finds the sleepy black horse (与) sleeping during a party in the elevator (e3). As it is the custom, she writes (与) on the sleepy black horse's body with a white felt-tip pen. She also decorates his head with a cooking top (冖).

下 = 一 + 卜 : Mnemonic symbol: from the up/down logic, and a little bit the shape of the character, a ladder.

Xi Shi (xi) is on a retreat in the ashram. Using a voodoo staff (卜), she divined that next (下) week she'll have to play the flute (一) sixteen hours per day. Because she hates playing the flute, she climbs over the ashram's bathroom (a4) wall using a ladder (下) to escape.