English verb conjugation
CAN JAR

Regular verb: jar - jarred - jarred

Affirmation

Simple form	V-ing form
I can jar you can jar he can jar we can jar you can jar they can jar	I can be jarring you can be jarring he can be jarring we can be jarring you can be jarring they can be jarring
Perfect	V-ing perfect
I can have jarred you can have jarred he can have jarred we can have jarred you can have jarred they can have jarred	I can have been jarring you can have been jarring he can have been jarring we can have been jarring you can have been jarring they can have been jarring

Negation

Simple form	V-ing form
I can't jar you can't jar he can't jar we can't jar you can't jar they can't jar	I can't be jarring you can't be jarring he can't be jarring we can't be jarring you can't be jarring they can't be jarring
Perfect	V-ing perfect
I can't have jarred you can't have jarred he can't have jarred we can't have jarred you can't have jarred they can't have jarred	I can't have been jarring you can't have been jarring he can't have been jarring we can't have been jarring you can't have been jarring they can't have been jarring

Interrogative form

Simple form	V-ing form
can I jar? can you jar? can he jar? can we jar? can you jar? can they jar?	can I be jarring? can you be jarring? can he be jarring? can we be jarring? can you be jarring? can they be jarring?
Perfect	V-ing perfect
can I have jarred? can you have jarred? can he have jarred? can we have jarred? can you have jarred? can they have jarred?	can I have been jarring? can you have been jarring? can he have been jarring? can we have been jarring? can you have been jarring? can they have been jarring?

Interro-negative form

Simple form	V-ing form
can't I jar? can't you jar? can't he jar? can't we jar? can't you jar? can't they jar?	can't I be jarring? can't you be jarring? can't he be jarring? can't we be jarring? can't you be jarring? can't they be jarring?
Perfect	V-ing perfect
can't I have jarred? can't you have jarred? can't he have jarred? can't we have jarred? can't you have jarred? can't they have jarred?	can't I have been jarring? can't you have been jarring? can't he have been jarring? can't we have been jarring? can't you have been jarring? can't they have been jarring?