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