can rebut
Regular verb: rebut - rebuted- rebuted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can rebut
you can rebut
he can rebut
we can rebut
you can rebut
they can rebut 	I can be rebuting
you can be rebuting
he can be rebuting
we can be rebuting
you can be rebuting
they can be rebuting	I can have rebuted
you can have rebuted
he can have rebuted
we can have rebuted
you can have rebuted
they can have rebuted	I can have been rebuting
you can have been rebuting
he can have been rebuting
we can have been rebuting
you can have been rebuting
they can have been rebuting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot rebut
you cannot rebut
he cannot rebut
we cannot rebut
you cannot rebut
they cannot rebut 	I cannot be rebuting
you cannot be rebuting
he cannot be rebuting
we cannot be rebuting
you cannot be rebuting
they cannot be rebuting	I cannot have rebuted
you cannot have rebuted
he cannot have rebuted
we cannot have rebuted
you cannot have rebuted
they cannot have rebuted	I cannot have been rebuting
you cannot have been rebuting
he cannot have been rebuting
we cannot have been rebuting
you cannot have been rebuting
they cannot have been rebuting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I rebut?
can you rebut?
can he rebut?
can we rebut?
can you rebut?
can they rebut? 	can I be rebuting?
can you be rebuting?
can he be rebuting?
can we be rebuting?
can you be rebuting?
can they be rebuting? 	can I have rebuted?
can you have rebuted?
can he have rebuted?
can we have rebuted?
can you have rebuted?
can they have rebuted? 	can I have been rebuting?
can you have been rebuting?
can he have been rebuting?
can we have been rebuting?
can you have been rebuting?
can they have been rebuting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not rebut?
can you not rebut?
can he not rebut?
can we not rebut?
can you not rebut?
can they not rebut? 	can I not be rebuting?
can you not be rebuting?
can he not be rebuting?
can we not be rebuting?
can you not be rebuting?
can they not be rebuting? 	can I not have rebuted?
can you not have rebuted?
can he not have rebuted?
can we not have rebuted?
can you not have rebuted?
can they not have rebuted? 	can I not have been rebuting?
can you not have been rebuting?
can he not have been rebuting?
can we not have been rebuting?
can you not have been rebuting?
can they not have been rebuting?