English verb conjugation
CAN LONGJUMP

Regular verb: longjump - longjumped - longjumped

Affirmation

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

Negation

Simple form	V-ing form
I can't longjump you can't longjump she can't longjump we can't longjump you can't longjump they can't longjump	I can't be longjumping you can't be longjumping she can't be longjumping we can't be longjumping you can't be longjumping they can't be longjumping
Perfect	V-ing perfect
I can't have longjumped you can't have longjumped she can't have longjumped we can't have longjumped you can't have longjumped they can't have longjumped	I can't have been longjumping you can't have been longjumping she can't have been longjumping we can't have been longjumping you can't have been longjumping they can't have been longjumping

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I longjump? can't you longjump? can't she longjump? can't we longjump? can't you longjump? can't they longjump?	can't I be longjumping? can't you be longjumping? can't she be longjumping? can't we be longjumping? can't you be longjumping? can't they be longjumping?
Perfect	V-ing perfect
can't I have longjumped? can't you have longjumped? can't she have longjumped? can't we have longjumped? can't you have longjumped? can't they have longjumped?	can't I have been longjumping? can't you have been longjumping? can't she have been longjumping? can't we have been longjumping? can't you have been longjumping? can't they have been longjumping?