English verb conjugation
COULD REGRAFT

Regular verb: regraft - regrafted - regrafted

Affirmation

Simple form	V-ing form
I could regraft you could regraft he could regraft we could regraft you could regraft they could regraft	I could be regrafting you could be regrafting he could be regrafting we could be regrafting you could be regrafting they could be regrafting
Perfect	V-ing perfect
I could have regrafted you could have regrafted he could have regrafted we could have regrafted you could have regrafted they could have regrafted	I could have been regrafting you could have been regrafting he could have been regrafting we could have been regrafting you could have been regrafting they could have been regrafting

Negation

Simple form	V-ing form
I couldn't regraft you couldn't regraft he couldn't regraft we couldn't regraft you couldn't regraft they couldn't regraft	I couldn't be regrafting you couldn't be regrafting he couldn't be regrafting we couldn't be regrafting you couldn't be regrafting they couldn't be regrafting
Perfect	V-ing perfect
I couldn't have regrafted you couldn't have regrafted he couldn't have regrafted we couldn't have regrafted you couldn't have regrafted they couldn't have regrafted	I couldn't have been regrafting you couldn't have been regrafting he couldn't have been regrafting we couldn't have been regrafting you couldn't have been regrafting they couldn't have been regrafting

Interrogative form

Simple form	V-ing form
could I regraft? could you regraft? could he regraft? could we regraft? could you regraft? could they regraft?	could I be regrafting? could you be regrafting? could he be regrafting? could we be regrafting? could you be regrafting? could they be regrafting?
Perfect	V-ing perfect
could I have regrafted? could you have regrafted? could he have regrafted? could we have regrafted? could you have regrafted? could they have regrafted?	could I have been regrafting? could you have been regrafting? could he have been regrafting? could we have been regrafting? could you have been regrafting? could they have been regrafting?

Interro-negative form

Simple form	V-ing form
couldn't I regraft? couldn't you regraft? couldn't he regraft? couldn't we regraft? couldn't you regraft? couldn't they regraft?	couldn't I be regrafting? couldn't you be regrafting? couldn't he be regrafting? couldn't we be regrafting? couldn't you be regrafting? couldn't they be regrafting?
Perfect	V-ing perfect
couldn't I have regrafted? couldn't you have regrafted? couldn't he have regrafted? couldn't we have regrafted? couldn't you have regrafted? couldn't they have regrafted?	couldn't I have been regrafting? couldn't you have been regrafting? couldn't he have been regrafting? couldn't we have been regrafting? couldn't you have been regrafting? couldn't they have been regrafting?