must barnstorm
Regular verb: barnstorm - barnstormed- barnstormed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must barnstorm
you must barnstorm
he must barnstorm
we must barnstorm
you must barnstorm
they must barnstorm 	I must be barnstorming
you must be barnstorming
he must be barnstorming
we must be barnstorming
you must be barnstorming
they must be barnstorming	I must have barnstormed
you must have barnstormed
he must have barnstormed
we must have barnstormed
you must have barnstormed
they must have barnstormed	I must have been barnstorming
you must have been barnstorming
he must have been barnstorming
we must have been barnstorming
you must have been barnstorming
they must have been barnstorming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't barnstorm
you mustn't barnstorm
he mustn't barnstorm
we mustn't barnstorm
you mustn't barnstorm
they mustn't barnstorm 	I mustn't be barnstorming
you mustn't be barnstorming
he mustn't be barnstorming
we mustn't be barnstorming
you mustn't be barnstorming
they mustn't be barnstorming	I mustn't have barnstormed
you mustn't have barnstormed
he mustn't have barnstormed
we mustn't have barnstormed
you mustn't have barnstormed
they mustn't have barnstormed	I mustn't have been barnstorming
you mustn't have been barnstorming
he mustn't have been barnstorming
we mustn't have been barnstorming
you mustn't have been barnstorming
they mustn't have been barnstorming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I barnstorm?
must you barnstorm?
must he barnstorm?
must we barnstorm?
must you barnstorm?
must they barnstorm? 	must I be barnstorming?
must you be barnstorming?
must he be barnstorming?
must we be barnstorming?
must you be barnstorming?
must they be barnstorming? 	must I have barnstormed?
must you have barnstormed?
must he have barnstormed?
must we have barnstormed?
must you have barnstormed?
must they have barnstormed? 	must I have been barnstorming?
must you have been barnstorming?
must he have been barnstorming?
must we have been barnstorming?
must you have been barnstorming?
must they have been barnstorming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I barnstorm?
mustn't you barnstorm?
mustn't he barnstorm?
mustn't we barnstorm?
mustn't you barnstorm?
mustn't they barnstorm? 	mustn't I be barnstorming?
mustn't you be barnstorming?
mustn't he be barnstorming?
mustn't we be barnstorming?
mustn't you be barnstorming?
mustn't they be barnstorming? 	mustn't I have barnstormed?
mustn't you have barnstormed?
mustn't he have barnstormed?
mustn't we have barnstormed?
mustn't you have barnstormed?
mustn't they have barnstormed? 	mustn't I have been barnstorming?
mustn't you have been barnstorming?
mustn't he have been barnstorming?
mustn't we have been barnstorming?
mustn't you have been barnstorming?
mustn't they have been barnstorming?