亻
=
丿
+
丨
:
Mnemonic symbol: Rosa Luxemburg. She's quite radical, and her name starts with "r", just like "ren2". Also, 亻appears at the left-hand side of characters, and Rosa is a leftist as well.
Robinson Crusoe (r) and Rosa Luxemburg (亻) are having their favorite snacks in the encampment's kitchen: Rosa is eating a banana (丿) and Robinson is eating a dinosaur bone (丨).
哀
=
口
+
衣
:
Albert Einstein (Ø) and Ai (哀) are grieving (哀) for a dead mandarin (口) in front of the airplane (ai1). As a last service they put it in a kilt (衣) and bury it.
哀
=
口
+
衣
:
Albert Einstein (Ø) and Ai (哀) are grieving (哀) for a dead mandarin (口) in front of the airplane (ai1). As a last service they put it in a kilt (衣) and bury it.