English verb conjugation
MUST BARNSTORM

Regular verb: barnstorm - barnstormed - barnstormed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I must not barnstorm you must not barnstorm he must not barnstorm we must not barnstorm you must not barnstorm they must not barnstorm	I must not be barnstorming you must not be barnstorming he must not be barnstorming we must not be barnstorming you must not be barnstorming they must not be barnstorming
Perfect	V-ing perfect
I must not have barnstormed you must not have barnstormed he must not have barnstormed we must not have barnstormed you must not have barnstormed they must not have barnstormed	I must not have been barnstorming you must not have been barnstorming he must not have been barnstorming we must not have been barnstorming you must not have been barnstorming they must not have been barnstorming

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
must I not barnstorm? must you not barnstorm? must he not barnstorm? must we not barnstorm? must you not barnstorm? must they not barnstorm?	must I not be barnstorming? must you not be barnstorming? must he not be barnstorming? must we not be barnstorming? must you not be barnstorming? must they not be barnstorming?
Perfect	V-ing perfect
must I not have barnstormed? must you not have barnstormed? must he not have barnstormed? must we not have barnstormed? must you not have barnstormed? must they not have barnstormed?	must I not have been barnstorming? must you not have been barnstorming? must he not have been barnstorming? must we not have been barnstorming? must you not have been barnstorming? must they not have been barnstorming?