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