I may graft you may graft he may graft we may graft you may graft they may graft
V-ing form
I may be grafting you may be grafting he may be grafting we may be grafting you may be grafting they may be grafting
Perfect
I may have grafted you may have grafted he 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 he may have been grafting we may have been grafting you may have been grafting they may have been grafting
Negation
Simple form
I mayn't graft you mayn't graft he mayn't graft we mayn't graft you mayn't graft they mayn't graft
V-ing form
I mayn't be grafting you mayn't be grafting he mayn't be grafting we mayn't be grafting you mayn't be grafting they mayn't be grafting
Perfect
I mayn't have grafted you mayn't have grafted he mayn't have grafted we mayn't have grafted you mayn't have grafted they mayn't have grafted
V-ing perfect
I mayn't have been grafting you mayn't have been grafting he mayn't have been grafting we mayn't have been grafting you mayn't have been grafting they mayn't have been grafting
Interrogative form
Simple form
may I graft? may you graft? may he graft? may we graft? may you graft? may they graft?
V-ing form
may I be grafting? may you be grafting? may he be grafting? may we be grafting? may you be grafting? may they be grafting?
Perfect
may I have grafted? may you have grafted? may he 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 he have been grafting? may we have been grafting? may you have been grafting? may they have been grafting?
Interro-negative form
Simple form
mayn't I graft? mayn't you graft? mayn't he graft? mayn't we graft? mayn't you graft? mayn't they graft?
V-ing form
mayn't I be grafting? mayn't you be grafting? mayn't he be grafting? mayn't we be grafting? mayn't you be grafting? mayn't they be grafting?
Perfect
mayn't I have grafted? mayn't you have grafted? mayn't he have grafted? mayn't we have grafted? mayn't you have grafted? mayn't they have grafted?
V-ing perfect
mayn't I have been grafting? mayn't you have been grafting? mayn't he have been grafting? mayn't we have been grafting? mayn't you have been grafting? mayn't they have been grafting?