I may maintain you may maintain she may maintain we may maintain you may maintain they may maintain
V-ing form
I may be maintaining you may be maintaining she may be maintaining we may be maintaining you may be maintaining they may be maintaining
Perfect
I may have maintained you may have maintained she may have maintained we may have maintained you may have maintained they may have maintained
V-ing perfect
I may have been maintaining you may have been maintaining she may have been maintaining we may have been maintaining you may have been maintaining they may have been maintaining
Negation
Simple form
I may not maintain you may not maintain she may not maintain we may not maintain you may not maintain they may not maintain
V-ing form
I may not be maintaining you may not be maintaining she may not be maintaining we may not be maintaining you may not be maintaining they may not be maintaining
Perfect
I may not have maintained you may not have maintained she may not have maintained we may not have maintained you may not have maintained they may not have maintained
V-ing perfect
I may not have been maintaining you may not have been maintaining she may not have been maintaining we may not have been maintaining you may not have been maintaining they may not have been maintaining
Interrogative form
Simple form
may I maintain? may you maintain? may she maintain? may we maintain? may you maintain? may they maintain?
V-ing form
may I be maintaining? may you be maintaining? may she be maintaining? may we be maintaining? may you be maintaining? may they be maintaining?
Perfect
may I have maintained? may you have maintained? may she have maintained? may we have maintained? may you have maintained? may they have maintained?
V-ing perfect
may I have been maintaining? may you have been maintaining? may she have been maintaining? may we have been maintaining? may you have been maintaining? may they have been maintaining?
Interro-negative form
Simple form
may I not maintain? may you not maintain? may she not maintain? may we not maintain? may you not maintain? may they not maintain?
V-ing form
may I not be maintaining? may you not be maintaining? may she not be maintaining? may we not be maintaining? may you not be maintaining? may they not be maintaining?
Perfect
may I not have maintained? may you not have maintained? may she not have maintained? may we not have maintained? may you not have maintained? may they not have maintained?
V-ing perfect
may I not have been maintaining? may you not have been maintaining? may she not have been maintaining? may we not have been maintaining? may you not have been maintaining? may they not have been maintaining?