must stagger
Regular verb: stagger - staggered- staggered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must stagger
you must stagger
he must stagger
we must stagger
you must stagger
they must stagger 	I must be staggering
you must be staggering
he must be staggering
we must be staggering
you must be staggering
they must be staggering	I must have staggered
you must have staggered
he 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
he 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 must not stagger
you must not stagger
he must not stagger
we must not stagger
you must not stagger
they must not stagger 	I must not be staggering
you must not be staggering
he must not be staggering
we must not be staggering
you must not be staggering
they must not be staggering	I must not have staggered
you must not have staggered
he must not have staggered
we must not have staggered
you must not have staggered
they must not have staggered	I must not have been staggering
you must not have been staggering
he must not have been staggering
we must not have been staggering
you must not have been staggering
they must not have been staggering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I stagger?
must you stagger?
must he stagger?
must we stagger?
must you stagger?
must they stagger? 	must I be staggering?
must you be staggering?
must he be staggering?
must we be staggering?
must you be staggering?
must they be staggering? 	must I have staggered?
must you have staggered?
must he 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 he 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 	
must I not stagger?
must you not stagger?
must he not stagger?
must we not stagger?
must you not stagger?
must they not stagger? 	must I not be staggering?
must you not be staggering?
must he not be staggering?
must we not be staggering?
must you not be staggering?
must they not be staggering? 	must I not have staggered?
must you not have staggered?
must he not have staggered?
must we not have staggered?
must you not have staggered?
must they not have staggered? 	must I not have been staggering?
must you not have been staggering?
must he not have been staggering?
must we not have been staggering?
must you not have been staggering?
must they not have been staggering?