I may help you may help she may help we may help you may help they may help
V-ing form
I may be helping you may be helping she may be helping we may be helping you may be helping they may be helping
Perfect
I may have helped you may have helped she may have helped we may have helped you may have helped they may have helped
V-ing perfect
I may have been helping you may have been helping she may have been helping we may have been helping you may have been helping they may have been helping
Negation
Simple form
I may not help you may not help she may not help we may not help you may not help they may not help
V-ing form
I may not be helping you may not be helping she may not be helping we may not be helping you may not be helping they may not be helping
Perfect
I may not have helped you may not have helped she may not have helped we may not have helped you may not have helped they may not have helped
V-ing perfect
I may not have been helping you may not have been helping she may not have been helping we may not have been helping you may not have been helping they may not have been helping
Interrogative form
Simple form
may I help? may you help? may she help? may we help? may you help? may they help?
V-ing form
may I be helping? may you be helping? may she be helping? may we be helping? may you be helping? may they be helping?
Perfect
may I have helped? may you have helped? may she have helped? may we have helped? may you have helped? may they have helped?
V-ing perfect
may I have been helping? may you have been helping? may she have been helping? may we have been helping? may you have been helping? may they have been helping?
Interro-negative form
Simple form
may I not help? may you not help? may she not help? may we not help? may you not help? may they not help?
V-ing form
may I not be helping? may you not be helping? may she not be helping? may we not be helping? may you not be helping? may they not be helping?
Perfect
may I not have helped? may you not have helped? may she not have helped? may we not have helped? may you not have helped? may they not have helped?
V-ing perfect
may I not have been helping? may you not have been helping? may she not have been helping? may we not have been helping? may you not have been helping? may they not have been helping?