English verb conjugation
CAN JAR

Regular verb: jar - jarred - jarred

Affirmation

Simple form	V-ing form
I can jar you can jar she can jar we can jar you can jar they can jar	I can be jarring you can be jarring she 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 she 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 she 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 she cannot jar we cannot jar you cannot jar they cannot jar	I cannot be jarring you cannot be jarring she 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 she 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 she 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 she jar? can we jar? can you jar? can they jar?	can I be jarring? can you be jarring? can she 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 she 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 she 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 she 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 she 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 she 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 she not have been jarring? can we not have been jarring? can you not have been jarring? can they not have been jarring?