I may step you may step he may step we may step you may step they may step
V-ing form
I may be stepping you may be stepping he may be stepping we may be stepping you may be stepping they may be stepping
Perfect
I may have stepped you may have stepped he may have stepped we may have stepped you may have stepped they may have stepped
V-ing perfect
I may have been stepping you may have been stepping he may have been stepping we may have been stepping you may have been stepping they may have been stepping
Negation
Simple form
I mayn't step you mayn't step he mayn't step we mayn't step you mayn't step they mayn't step
V-ing form
I mayn't be stepping you mayn't be stepping he mayn't be stepping we mayn't be stepping you mayn't be stepping they mayn't be stepping
Perfect
I mayn't have stepped you mayn't have stepped he mayn't have stepped we mayn't have stepped you mayn't have stepped they mayn't have stepped
V-ing perfect
I mayn't have been stepping you mayn't have been stepping he mayn't have been stepping we mayn't have been stepping you mayn't have been stepping they mayn't have been stepping
Interrogative form
Simple form
may I step? may you step? may he step? may we step? may you step? may they step?
V-ing form
may I be stepping? may you be stepping? may he be stepping? may we be stepping? may you be stepping? may they be stepping?
Perfect
may I have stepped? may you have stepped? may he have stepped? may we have stepped? may you have stepped? may they have stepped?
V-ing perfect
may I have been stepping? may you have been stepping? may he have been stepping? may we have been stepping? may you have been stepping? may they have been stepping?
Interro-negative form
Simple form
mayn't I step? mayn't you step? mayn't he step? mayn't we step? mayn't you step? mayn't they step?
V-ing form
mayn't I be stepping? mayn't you be stepping? mayn't he be stepping? mayn't we be stepping? mayn't you be stepping? mayn't they be stepping?
Perfect
mayn't I have stepped? mayn't you have stepped? mayn't he have stepped? mayn't we have stepped? mayn't you have stepped? mayn't they have stepped?
V-ing perfect
mayn't I have been stepping? mayn't you have been stepping? mayn't he have been stepping? mayn't we have been stepping? mayn't you have been stepping? mayn't they have been stepping?