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