must stagger
Regular verb: stagger - staggered- staggered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must stagger
you must stagger
she must stagger
we must stagger
you must stagger
they must stagger 	I must be staggering
you must be staggering
she must be staggering
we must be staggering
you must be staggering
they must be staggering	I must have staggered
you must have staggered
she must have staggered
we must have staggered
you must have staggered
they must have staggered	I must have been staggering
you must have been staggering
she must have been staggering
we must have been staggering
you must have been staggering
they must have been staggering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't stagger
you mustn't stagger
she mustn't stagger
we mustn't stagger
you mustn't stagger
they mustn't stagger 	I mustn't be staggering
you mustn't be staggering
she mustn't be staggering
we mustn't be staggering
you mustn't be staggering
they mustn't be staggering	I mustn't have staggered
you mustn't have staggered
she mustn't have staggered
we mustn't have staggered
you mustn't have staggered
they mustn't have staggered	I mustn't have been staggering
you mustn't have been staggering
she mustn't have been staggering
we mustn't have been staggering
you mustn't have been staggering
they mustn't have been staggering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I stagger?
must you stagger?
must she stagger?
must we stagger?
must you stagger?
must they stagger? 	must I be staggering?
must you be staggering?
must she be staggering?
must we be staggering?
must you be staggering?
must they be staggering? 	must I have staggered?
must you have staggered?
must she have staggered?
must we have staggered?
must you have staggered?
must they have staggered? 	must I have been staggering?
must you have been staggering?
must she have been staggering?
must we have been staggering?
must you have been staggering?
must they have been staggering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I stagger?
mustn't you stagger?
mustn't she stagger?
mustn't we stagger?
mustn't you stagger?
mustn't they stagger? 	mustn't I be staggering?
mustn't you be staggering?
mustn't she be staggering?
mustn't we be staggering?
mustn't you be staggering?
mustn't they be staggering? 	mustn't I have staggered?
mustn't you have staggered?
mustn't she have staggered?
mustn't we have staggered?
mustn't you have staggered?
mustn't they have staggered? 	mustn't I have been staggering?
mustn't you have been staggering?
mustn't she have been staggering?
mustn't we have been staggering?
mustn't you have been staggering?
mustn't they have been staggering?