I must line you must line he must line we must line you must line they must line
V-ing form
I must be lining you must be lining he must be lining we must be lining you must be lining they must be lining
Perfect
I must have lined you must have lined he must have lined we must have lined you must have lined they must have lined
V-ing perfect
I must have been lining you must have been lining he must have been lining we must have been lining you must have been lining they must have been lining
Negation
Simple form
I mustn't line you mustn't line he mustn't line we mustn't line you mustn't line they mustn't line
V-ing form
I mustn't be lining you mustn't be lining he mustn't be lining we mustn't be lining you mustn't be lining they mustn't be lining
Perfect
I mustn't have lined you mustn't have lined he mustn't have lined we mustn't have lined you mustn't have lined they mustn't have lined
V-ing perfect
I mustn't have been lining you mustn't have been lining he mustn't have been lining we mustn't have been lining you mustn't have been lining they mustn't have been lining
Interrogative form
Simple form
must I line? must you line? must he line? must we line? must you line? must they line?
V-ing form
must I be lining? must you be lining? must he be lining? must we be lining? must you be lining? must they be lining?
Perfect
must I have lined? must you have lined? must he have lined? must we have lined? must you have lined? must they have lined?
V-ing perfect
must I have been lining? must you have been lining? must he have been lining? must we have been lining? must you have been lining? must they have been lining?
Interro-negative form
Simple form
mustn't I line? mustn't you line? mustn't he line? mustn't we line? mustn't you line? mustn't they line?
V-ing form
mustn't I be lining? mustn't you be lining? mustn't he be lining? mustn't we be lining? mustn't you be lining? mustn't they be lining?
Perfect
mustn't I have lined? mustn't you have lined? mustn't he have lined? mustn't we have lined? mustn't you have lined? mustn't they have lined?
V-ing perfect
mustn't I have been lining? mustn't you have been lining? mustn't he have been lining? mustn't we have been lining? mustn't you have been lining? mustn't they have been lining?