勒
=
力
+
革
:
Sir Lancelot (l) constructed a mechanical bull in the elevator's bathroom (e4), mainly just using a cow's hide (革) and a power button (力). To rein in (勒) the wild mechanical bull he presses the button and rides the bull again and again.
戒
=
戈
+
廾
:
Joan of Arc (ji) asked to see the holy ring (戒) in the elevator's bathroom (e4). She is allowed to see it, but she has to wear handcuffs (廾) as precaution. Additionally, there is a guard equipped with a spear (戈) standing next to the ring.