I may refuse you may refuse he may refuse we may refuse you may refuse they may refuse
V-ing form
I may be refusing you may be refusing he may be refusing we may be refusing you may be refusing they may be refusing
Perfect
I may have refused you may have refused he may have refused we may have refused you may have refused they may have refused
V-ing perfect
I may have been refusing you may have been refusing he may have been refusing we may have been refusing you may have been refusing they may have been refusing
Negation
Simple form
I may not refuse you may not refuse he may not refuse we may not refuse you may not refuse they may not refuse
V-ing form
I may not be refusing you may not be refusing he may not be refusing we may not be refusing you may not be refusing they may not be refusing
Perfect
I may not have refused you may not have refused he may not have refused we may not have refused you may not have refused they may not have refused
V-ing perfect
I may not have been refusing you may not have been refusing he may not have been refusing we may not have been refusing you may not have been refusing they may not have been refusing
Interrogative form
Simple form
may I refuse? may you refuse? may he refuse? may we refuse? may you refuse? may they refuse?
V-ing form
may I be refusing? may you be refusing? may he be refusing? may we be refusing? may you be refusing? may they be refusing?
Perfect
may I have refused? may you have refused? may he have refused? may we have refused? may you have refused? may they have refused?
V-ing perfect
may I have been refusing? may you have been refusing? may he have been refusing? may we have been refusing? may you have been refusing? may they have been refusing?
Interro-negative form
Simple form
may I not refuse? may you not refuse? may he not refuse? may we not refuse? may you not refuse? may they not refuse?
V-ing form
may I not be refusing? may you not be refusing? may he not be refusing? may we not be refusing? may you not be refusing? may they not be refusing?
Perfect
may I not have refused? may you not have refused? may he not have refused? may we not have refused? may you not have refused? may they not have refused?
V-ing perfect
may I not have been refusing? may you not have been refusing? may he not have been refusing? may we not have been refusing? may you not have been refusing? may they not have been refusing?