刂
=
丨
+
亅
:
Mnemonic symbol: a kitchen knife. Don Quixote (d) is showing off his special knifes in front of the aorta (ao1). One is made from a dinosaur bone (丨), and the other is made from a crowbar (亅).
呙
=
内
+
口
:
Willy Walrus (w) has been accused of stealing two mandarins (口) in front of the airplane (ai1). He refuses to open his bag, so the arriving police has to put him into a CT (内) to see into (内) his bag. On the CT screen they see Willy Walrus and two lopsided (呙) mandarins in his bag.