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