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 cannot jar you cannot jar he cannot jar we cannot jar you cannot jar they cannot jar	I cannot be jarring you cannot be jarring he cannot be jarring we cannot be jarring you cannot be jarring they cannot be jarring
Perfect	V-ing perfect
I cannot have jarred you cannot have jarred he cannot have jarred we cannot have jarred you cannot have jarred they cannot have jarred	I cannot have been jarring you cannot have been jarring he cannot have been jarring we cannot have been jarring you cannot have been jarring they cannot 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 I not jar? can you not jar? can he not jar? can we not jar? can you not jar? can they not jar?	can I not be jarring? can you not be jarring? can he not be jarring? can we not be jarring? can you not be jarring? can they not be jarring?
Perfect	V-ing perfect
can I not have jarred? can you not have jarred? can he not have jarred? can we not have jarred? can you not have jarred? can they not have jarred?	can I not have been jarring? can you not have been jarring? can he not have been jarring? can we not have been jarring? can you not have been jarring? can they not have been jarring?