Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must stagger stagger you must stagger stagger he must stagger stagger we must stagger stagger you must stagger stagger they must stagger stagger
V-ing form
I must be stagger staggering you must be stagger staggering he must be stagger staggering we must be stagger staggering you must be stagger staggering they must be stagger staggering
Perfect
I must have stagger staggered you must have stagger staggered he must have stagger staggered we must have stagger staggered you must have stagger staggered they must have stagger staggered
V-ing perfect
I must have been stagger staggering you must have been stagger staggering he must have been stagger staggering we must have been stagger staggering you must have been stagger staggering they must have been stagger staggering
Negation
Simple form
I mustn't stagger stagger you mustn't stagger stagger he mustn't stagger stagger we mustn't stagger stagger you mustn't stagger stagger they mustn't stagger stagger
V-ing form
I mustn't be stagger staggering you mustn't be stagger staggering he mustn't be stagger staggering we mustn't be stagger staggering you mustn't be stagger staggering they mustn't be stagger staggering
Perfect
I mustn't have stagger staggered you mustn't have stagger staggered he mustn't have stagger staggered we mustn't have stagger staggered you mustn't have stagger staggered they mustn't have stagger staggered
V-ing perfect
I mustn't have been stagger staggering you mustn't have been stagger staggering he mustn't have been stagger staggering we mustn't have been stagger staggering you mustn't have been stagger staggering they mustn't have been stagger staggering
Interrogative form
Simple form
must I stagger stagger? must you stagger stagger? must he stagger stagger? must we stagger stagger? must you stagger stagger? must they stagger stagger?
V-ing form
must I be stagger staggering? must you be stagger staggering? must he be stagger staggering? must we be stagger staggering? must you be stagger staggering? must they be stagger staggering?
Perfect
must I have stagger staggered? must you have stagger staggered? must he have stagger staggered? must we have stagger staggered? must you have stagger staggered? must they have stagger staggered?
V-ing perfect
must I have been stagger staggering? must you have been stagger staggering? must he have been stagger staggering? must we have been stagger staggering? must you have been stagger staggering? must they have been stagger staggering?
Interro-negative form
Simple form
mustn't I stagger stagger? mustn't you stagger stagger? mustn't he stagger stagger? mustn't we stagger stagger? mustn't you stagger stagger? mustn't they stagger stagger?
V-ing form
mustn't I be stagger staggering? mustn't you be stagger staggering? mustn't he be stagger staggering? mustn't we be stagger staggering? mustn't you be stagger staggering? mustn't they be stagger staggering?
Perfect
mustn't I have stagger staggered? mustn't you have stagger staggered? mustn't he have stagger staggered? mustn't we have stagger staggered? mustn't you have stagger staggered? mustn't they have stagger staggered?
V-ing perfect
mustn't I have been stagger staggering? mustn't you have been stagger staggering? mustn't he have been stagger staggering? mustn't we have been stagger staggering? mustn't you have been stagger staggering? mustn't they have been stagger staggering?