can dispute
Regular verb: dispute - disputed- disputed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can dispute
you can dispute
she can dispute
we can dispute
you can dispute
they can dispute 	I can be disputing
you can be disputing
she can be disputing
we can be disputing
you can be disputing
they can be disputing	I can have disputed
you can have disputed
she can have disputed
we can have disputed
you can have disputed
they can have disputed	I can have been disputing
you can have been disputing
she can have been disputing
we can have been disputing
you can have been disputing
they can have been disputing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot dispute
you cannot dispute
she cannot dispute
we cannot dispute
you cannot dispute
they cannot dispute 	I cannot be disputing
you cannot be disputing
she cannot be disputing
we cannot be disputing
you cannot be disputing
they cannot be disputing	I cannot have disputed
you cannot have disputed
she cannot have disputed
we cannot have disputed
you cannot have disputed
they cannot have disputed	I cannot have been disputing
you cannot have been disputing
she cannot have been disputing
we cannot have been disputing
you cannot have been disputing
they cannot have been disputing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I dispute?
can you dispute?
can she dispute?
can we dispute?
can you dispute?
can they dispute? 	can I be disputing?
can you be disputing?
can she be disputing?
can we be disputing?
can you be disputing?
can they be disputing? 	can I have disputed?
can you have disputed?
can she have disputed?
can we have disputed?
can you have disputed?
can they have disputed? 	can I have been disputing?
can you have been disputing?
can she have been disputing?
can we have been disputing?
can you have been disputing?
can they have been disputing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not dispute?
can you not dispute?
can she not dispute?
can we not dispute?
can you not dispute?
can they not dispute? 	can I not be disputing?
can you not be disputing?
can she not be disputing?
can we not be disputing?
can you not be disputing?
can they not be disputing? 	can I not have disputed?
can you not have disputed?
can she not have disputed?
can we not have disputed?
can you not have disputed?
can they not have disputed? 	can I not have been disputing?
can you not have been disputing?
can she not have been disputing?
can we not have been disputing?
can you not have been disputing?
can they not have been disputing?