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