English verb conjugation
COULD LONGJUMP

Regular verb: longjump - longjumped - longjumped

Affirmation

Simple form	V-ing form
I could longjump you could longjump he could longjump we could longjump you could longjump they could longjump	I could be longjumping you could be longjumping he could be longjumping we could be longjumping you could be longjumping they could be longjumping
Perfect	V-ing perfect
I could have longjumped you could have longjumped he could have longjumped we could have longjumped you could have longjumped they could have longjumped	I could have been longjumping you could have been longjumping he could have been longjumping we could have been longjumping you could have been longjumping they could have been longjumping

Negation

Simple form	V-ing form
I could not longjump you could not longjump he could not longjump we could not longjump you could not longjump they could not longjump	I could not be longjumping you could not be longjumping he could not be longjumping we could not be longjumping you could not be longjumping they could not be longjumping
Perfect	V-ing perfect
I could not have longjumped you could not have longjumped he could not have longjumped we could not have longjumped you could not have longjumped they could not have longjumped	I could not have been longjumping you could not have been longjumping he could not have been longjumping we could not have been longjumping you could not have been longjumping they could not have been longjumping

Interrogative form

Simple form	V-ing form
could I longjump? could you longjump? could he longjump? could we longjump? could you longjump? could they longjump?	could I be longjumping? could you be longjumping? could he be longjumping? could we be longjumping? could you be longjumping? could they be longjumping?
Perfect	V-ing perfect
could I have longjumped? could you have longjumped? could he have longjumped? could we have longjumped? could you have longjumped? could they have longjumped?	could I have been longjumping? could you have been longjumping? could he have been longjumping? could we have been longjumping? could you have been longjumping? could they have been longjumping?

Interro-negative form

Simple form	V-ing form
could I not longjump? could you not longjump? could he not longjump? could we not longjump? could you not longjump? could they not longjump?	could I not be longjumping? could you not be longjumping? could he not be longjumping? could we not be longjumping? could you not be longjumping? could they not be longjumping?
Perfect	V-ing perfect
could I not have longjumped? could you not have longjumped? could he not have longjumped? could we not have longjumped? could you not have longjumped? could they not have longjumped?	could I not have been longjumping? could you not have been longjumping? could he not have been longjumping? could we not have been longjumping? could you not have been longjumping? could they not have been longjumping?