English verb conjugation
CAN CHAP

Regular verb: chap - chapped - chapped

Affirmation

Simple form	V-ing form
I can chap you can chap he can chap we can chap you can chap they can chap	I can be chapping you can be chapping he can be chapping we can be chapping you can be chapping they can be chapping
Perfect	V-ing perfect
I can have chapped you can have chapped he can have chapped we can have chapped you can have chapped they can have chapped	I can have been chapping you can have been chapping he can have been chapping we can have been chapping you can have been chapping they can have been chapping

Negation

Simple form	V-ing form
I cannot chap you cannot chap he cannot chap we cannot chap you cannot chap they cannot chap	I cannot be chapping you cannot be chapping he cannot be chapping we cannot be chapping you cannot be chapping they cannot be chapping
Perfect	V-ing perfect
I cannot have chapped you cannot have chapped he cannot have chapped we cannot have chapped you cannot have chapped they cannot have chapped	I cannot have been chapping you cannot have been chapping he cannot have been chapping we cannot have been chapping you cannot have been chapping they cannot have been chapping

Interrogative form

Simple form	V-ing form
can I chap? can you chap? can he chap? can we chap? can you chap? can they chap?	can I be chapping? can you be chapping? can he be chapping? can we be chapping? can you be chapping? can they be chapping?
Perfect	V-ing perfect
can I have chapped? can you have chapped? can he have chapped? can we have chapped? can you have chapped? can they have chapped?	can I have been chapping? can you have been chapping? can he have been chapping? can we have been chapping? can you have been chapping? can they have been chapping?

Interro-negative form

Simple form	V-ing form
can I not chap? can you not chap? can he not chap? can we not chap? can you not chap? can they not chap?	can I not be chapping? can you not be chapping? can he not be chapping? can we not be chapping? can you not be chapping? can they not be chapping?
Perfect	V-ing perfect
can I not have chapped? can you not have chapped? can he not have chapped? can we not have chapped? can you not have chapped? can they not have chapped?	can I not have been chapping? can you not have been chapping? can he not have been chapping? can we not have been chapping? can you not have been chapping? can they not have been chapping?