I may graft you may graft she may graft we may graft you may graft they may graft
V-ing form
I may be grafting you may be grafting she may be grafting we may be grafting you may be grafting they may be grafting
Perfect
I may have grafted you may have grafted she may have grafted we may have grafted you may have grafted they may have grafted
V-ing perfect
I may have been grafting you may have been grafting she may have been grafting we may have been grafting you may have been grafting they may have been grafting
Negation
Simple form
I may not graft you may not graft she may not graft we may not graft you may not graft they may not graft
V-ing form
I may not be grafting you may not be grafting she may not be grafting we may not be grafting you may not be grafting they may not be grafting
Perfect
I may not have grafted you may not have grafted she may not have grafted we may not have grafted you may not have grafted they may not have grafted
V-ing perfect
I may not have been grafting you may not have been grafting she may not have been grafting we may not have been grafting you may not have been grafting they may not have been grafting
Interrogative form
Simple form
may I graft? may you graft? may she graft? may we graft? may you graft? may they graft?
V-ing form
may I be grafting? may you be grafting? may she be grafting? may we be grafting? may you be grafting? may they be grafting?
Perfect
may I have grafted? may you have grafted? may she have grafted? may we have grafted? may you have grafted? may they have grafted?
V-ing perfect
may I have been grafting? may you have been grafting? may she have been grafting? may we have been grafting? may you have been grafting? may they have been grafting?
Interro-negative form
Simple form
may I not graft? may you not graft? may she not graft? may we not graft? may you not graft? may they not graft?
V-ing form
may I not be grafting? may you not be grafting? may she not be grafting? may we not be grafting? may you not be grafting? may they not be grafting?
Perfect
may I not have grafted? may you not have grafted? may she not have grafted? may we not have grafted? may you not have grafted? may they not have grafted?
V-ing perfect
may I not have been grafting? may you not have been grafting? may she not have been grafting? may we not have been grafting? may you not have been grafting? may they not have been grafting?