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 mayn't refuse you mayn't refuse he mayn't refuse we mayn't refuse you mayn't refuse they mayn't refuse
V-ing form
I mayn't be refusing you mayn't be refusing he mayn't be refusing we mayn't be refusing you mayn't be refusing they mayn't be refusing
Perfect
I mayn't have refused you mayn't have refused he mayn't have refused we mayn't have refused you mayn't have refused they mayn't have refused
V-ing perfect
I mayn't have been refusing you mayn't have been refusing he mayn't have been refusing we mayn't have been refusing you mayn't have been refusing they mayn't 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
mayn't I refuse? mayn't you refuse? mayn't he refuse? mayn't we refuse? mayn't you refuse? mayn't they refuse?
V-ing form
mayn't I be refusing? mayn't you be refusing? mayn't he be refusing? mayn't we be refusing? mayn't you be refusing? mayn't they be refusing?
Perfect
mayn't I have refused? mayn't you have refused? mayn't he have refused? mayn't we have refused? mayn't you have refused? mayn't they have refused?
V-ing perfect
mayn't I have been refusing? mayn't you have been refusing? mayn't he have been refusing? mayn't we have been refusing? mayn't you have been refusing? mayn't they have been refusing?