can refuse
Regular verb: refuse - refused- refused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can refuse
you can refuse
she can refuse
we can refuse
you can refuse
they can refuse 	I can be refusing
you can be refusing
she can be refusing
we can be refusing
you can be refusing
they can be refusing	I can have refused
you can have refused
she can have refused
we can have refused
you can have refused
they can have refused	I can have been refusing
you can have been refusing
she can have been refusing
we can have been refusing
you can have been refusing
they can have been refusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't refuse
you can't refuse
she can't refuse
we can't refuse
you can't refuse
they can't refuse 	I can't be refusing
you can't be refusing
she can't be refusing
we can't be refusing
you can't be refusing
they can't be refusing	I can't have refused
you can't have refused
she can't have refused
we can't have refused
you can't have refused
they can't have refused	I can't have been refusing
you can't have been refusing
she can't have been refusing
we can't have been refusing
you can't have been refusing
they can't have been refusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I refuse?
can you refuse?
can she refuse?
can we refuse?
can you refuse?
can they refuse? 	can I be refusing?
can you be refusing?
can she be refusing?
can we be refusing?
can you be refusing?
can they be refusing? 	can I have refused?
can you have refused?
can she have refused?
can we have refused?
can you have refused?
can they have refused? 	can I have been refusing?
can you have been refusing?
can she have been refusing?
can we have been refusing?
can you have been refusing?
can they have been refusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I refuse?
can't you refuse?
can't she refuse?
can't we refuse?
can't you refuse?
can't they refuse? 	can't I be refusing?
can't you be refusing?
can't she be refusing?
can't we be refusing?
can't you be refusing?
can't they be refusing? 	can't I have refused?
can't you have refused?
can't she have refused?
can't we have refused?
can't you have refused?
can't they have refused? 	can't I have been refusing?
can't you have been refusing?
can't she have been refusing?
can't we have been refusing?
can't you have been refusing?
can't they have been refusing?