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 must not whine you must not whine she must not whine we must not whine you must not whine they must not whine
V-ing form
I must not be whining you must not be whining she must not be whining we must not be whining you must not be whining they must not be whining
Perfect
I must not have whined you must not have whined she must not have whined we must not have whined you must not have whined they must not have whined
V-ing perfect
I must not have been whining you must not have been whining she must not have been whining we must not have been whining you must not have been whining they must not 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
must I not whine? must you not whine? must she not whine? must we not whine? must you not whine? must they not whine?
V-ing form
must I not be whining? must you not be whining? must she not be whining? must we not be whining? must you not be whining? must they not be whining?
Perfect
must I not have whined? must you not have whined? must she not have whined? must we not have whined? must you not have whined? must they not have whined?
V-ing perfect
must I not have been whining? must you not have been whining? must she not have been whining? must we not have been whining? must you not have been whining? must they not have been whining?