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