can cancel
Regular verb: cancel - cancelled- cancelled

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