English verb conjugation
CAN CANCEL

Regular verb: cancel - cancelled - cancelled

Affirmation

Simple form	V-ing form
I can cancel you can cancel he can cancel we can cancel you can cancel they can cancel	I can be cancelling you can be cancelling he can be cancelling we can be cancelling you can be cancelling they can be cancelling
Perfect	V-ing perfect
I can have cancelled you can have cancelled he can have cancelled we can have cancelled you can have cancelled they can have cancelled	I can have been cancelling you can have been cancelling he can have been cancelling we can have been cancelling you can have been cancelling they can have been cancelling

Negation

Simple form	V-ing form
I can't cancel you can't cancel he can't cancel we can't cancel you can't cancel they can't cancel	I can't be cancelling you can't be cancelling he can't be cancelling we can't be cancelling you can't be cancelling they can't be cancelling
Perfect	V-ing perfect
I can't have cancelled you can't have cancelled he can't have cancelled we can't have cancelled you can't have cancelled they can't have cancelled	I can't have been cancelling you can't have been cancelling he can't have been cancelling we can't have been cancelling you can't have been cancelling they can't have been cancelling

Interrogative form

Simple form	V-ing form
can I cancel? can you cancel? can he cancel? can we cancel? can you cancel? can they cancel?	can I be cancelling? can you be cancelling? can he be cancelling? can we be cancelling? can you be cancelling? can they be cancelling?
Perfect	V-ing perfect
can I have cancelled? can you have cancelled? can he have cancelled? can we have cancelled? can you have cancelled? can they have cancelled?	can I have been cancelling? can you have been cancelling? can he have been cancelling? can we have been cancelling? can you have been cancelling? can they have been cancelling?

Interro-negative form

Simple form	V-ing form
can't I cancel? can't you cancel? can't he cancel? can't we cancel? can't you cancel? can't they cancel?	can't I be cancelling? can't you be cancelling? can't he be cancelling? can't we be cancelling? can't you be cancelling? can't they be cancelling?
Perfect	V-ing perfect
can't I have cancelled? can't you have cancelled? can't he have cancelled? can't we have cancelled? can't you have cancelled? can't they have cancelled?	can't I have been cancelling? can't you have been cancelling? can't he have been cancelling? can't we have been cancelling? can't you have been cancelling? can't they have been cancelling?