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