I must whine you must whine she must whine we must whine you must whine they must whine
V-ing form
I must be whining you must be whining she must be whining we must be whining you must be whining they must be whining
Perfect
I must have whined you must have whined she must have whined we must have whined you must have whined they must have whined
V-ing perfect
I must have been whining you must have been whining she must have been whining we must have been whining you must have been whining they must have been whining
Negation
Simple form
I mustn't whine you mustn't whine she mustn't whine we mustn't whine you mustn't whine they mustn't whine
V-ing form
I mustn't be whining you mustn't be whining she mustn't be whining we mustn't be whining you mustn't be whining they mustn't be whining
Perfect
I mustn't have whined you mustn't have whined she mustn't have whined we mustn't have whined you mustn't have whined they mustn't have whined
V-ing perfect
I mustn't have been whining you mustn't have been whining she mustn't have been whining we mustn't have been whining you mustn't have been whining they mustn't have been whining
Interrogative form
Simple form
must I whine? must you whine? must she whine? must we whine? must you whine? must they whine?
V-ing form
must I be whining? must you be whining? must she be whining? must we be whining? must you be whining? must they be whining?
Perfect
must I have whined? must you have whined? must she have whined? must we have whined? must you have whined? must they have whined?
V-ing perfect
must I have been whining? must you have been whining? must she have been whining? must we have been whining? must you have been whining? must they have been whining?
Interro-negative form
Simple form
mustn't I whine? mustn't you whine? mustn't she whine? mustn't we whine? mustn't you whine? mustn't they whine?
V-ing form
mustn't I be whining? mustn't you be whining? mustn't she be whining? mustn't we be whining? mustn't you be whining? mustn't they be whining?
Perfect
mustn't I have whined? mustn't you have whined? mustn't she have whined? mustn't we have whined? mustn't you have whined? mustn't they have whined?
V-ing perfect
mustn't I have been whining? mustn't you have been whining? mustn't she have been whining? mustn't we have been whining? mustn't you have been whining? mustn't they have been whining?