The question. If we start with uL+uS,uM If we tip the tower to the right, do we get: (1) rL,rS,uM (2) rL,uM,rS (3) rL,uM+uS I could see an argument for any or all of them, and I don't think the rules really help.
The correct answer is (1). How should the rule be written so as to make this more clear?