if G does not play then H and either A or B must play.

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if G does not play then H and either A or B must play.

if G does not play then H and either A or B must play.
if G does not play then H and either A or B must play.

if G does not play then H and either A or B must play.
G H A B都是人对吗?
G如果不演的话,那么H一定要演,A和B中的一个人也要演