English verb conjugation
COULD BARNSTORM

Regular verb: barnstorm - barnstormed - barnstormed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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