I may sell you may sell she may sell we may sell you may sell they may sell
V-ing form
I may be selling you may be selling she may be selling we may be selling you may be selling they may be selling
Perfect
I may have sold you may have sold she may have sold we may have sold you may have sold they may have sold
V-ing perfect
I may have been selling you may have been selling she may have been selling we may have been selling you may have been selling they may have been selling
Negation
Simple form
I mayn't sell you mayn't sell she mayn't sell we mayn't sell you mayn't sell they mayn't sell
V-ing form
I mayn't be selling you mayn't be selling she mayn't be selling we mayn't be selling you mayn't be selling they mayn't be selling
Perfect
I mayn't have sold you mayn't have sold she mayn't have sold we mayn't have sold you mayn't have sold they mayn't have sold
V-ing perfect
I mayn't have been selling you mayn't have been selling she mayn't have been selling we mayn't have been selling you mayn't have been selling they mayn't have been selling
Interrogative form
Simple form
may I sell? may you sell? may she sell? may we sell? may you sell? may they sell?
V-ing form
may I be selling? may you be selling? may she be selling? may we be selling? may you be selling? may they be selling?
Perfect
may I have sold? may you have sold? may she have sold? may we have sold? may you have sold? may they have sold?
V-ing perfect
may I have been selling? may you have been selling? may she have been selling? may we have been selling? may you have been selling? may they have been selling?
Interro-negative form
Simple form
mayn't I sell? mayn't you sell? mayn't she sell? mayn't we sell? mayn't you sell? mayn't they sell?
V-ing form
mayn't I be selling? mayn't you be selling? mayn't she be selling? mayn't we be selling? mayn't you be selling? mayn't they be selling?
Perfect
mayn't I have sold? mayn't you have sold? mayn't she have sold? mayn't we have sold? mayn't you have sold? mayn't they have sold?
V-ing perfect
mayn't I have been selling? mayn't you have been selling? mayn't she have been selling? mayn't we have been selling? mayn't you have been selling? mayn't they have been selling?