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