I can jar you can jar she can jar we can jar you can jar they can jar
V-ing form
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
I can have jarred you can have jarred she can have jarred we can have jarred you can have jarred they can have jarred
V-ing perfect
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
I cannot jar you cannot jar she cannot jar we cannot jar you cannot jar they cannot jar
V-ing form
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
I cannot have jarred you cannot have jarred she cannot have jarred we cannot have jarred you cannot have jarred they cannot have jarred
V-ing perfect
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
can I jar? can you jar? can she jar? can we jar? can you jar? can they jar?
V-ing form
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
can I have jarred? can you have jarred? can she have jarred? can we have jarred? can you have jarred? can they have jarred?
V-ing perfect
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
can I not jar? can you not jar? can she not jar? can we not jar? can you not jar? can they not jar?
V-ing form
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
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?
V-ing perfect
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?