M: Place your right flat hand on the back of your left flat hand, open and close your right hand twice like opening a door. (AUSLAN +ASL +BSL)

H: Place your hands under the person's then place your right flat hand on the back of your left flat hand, open and close your right hand twice like opening a door.

C: Shape the person’s hands so they are both flat, place their right hand on the back of their left hand, open and close their right hand twice.

B: Place your right hand on the back of the person’s hand, open and close your hand on theirs twice.

Try: door bell, door lock, door mat, door knob,