English verb conjugation
COULD INTERGRAFT

Regular verb: intergraft - intergrafted - intergrafted

Affirmation

Simple form	V-ing form
I could intergraft you could intergraft he could intergraft we could intergraft you could intergraft they could intergraft	I could be intergrafting you could be intergrafting he could be intergrafting we could be intergrafting you could be intergrafting they could be intergrafting
Perfect	V-ing perfect
I could have intergrafted you could have intergrafted he could have intergrafted we could have intergrafted you could have intergrafted they could have intergrafted	I could have been intergrafting you could have been intergrafting he could have been intergrafting we could have been intergrafting you could have been intergrafting they could have been intergrafting

Negation

Simple form	V-ing form
I could not intergraft you could not intergraft he could not intergraft we could not intergraft you could not intergraft they could not intergraft	I could not be intergrafting you could not be intergrafting he could not be intergrafting we could not be intergrafting you could not be intergrafting they could not be intergrafting
Perfect	V-ing perfect
I could not have intergrafted you could not have intergrafted he could not have intergrafted we could not have intergrafted you could not have intergrafted they could not have intergrafted	I could not have been intergrafting you could not have been intergrafting he could not have been intergrafting we could not have been intergrafting you could not have been intergrafting they could not have been intergrafting

Interrogative form

Simple form	V-ing form
could I intergraft? could you intergraft? could he intergraft? could we intergraft? could you intergraft? could they intergraft?	could I be intergrafting? could you be intergrafting? could he be intergrafting? could we be intergrafting? could you be intergrafting? could they be intergrafting?
Perfect	V-ing perfect
could I have intergrafted? could you have intergrafted? could he have intergrafted? could we have intergrafted? could you have intergrafted? could they have intergrafted?	could I have been intergrafting? could you have been intergrafting? could he have been intergrafting? could we have been intergrafting? could you have been intergrafting? could they have been intergrafting?

Interro-negative form

Simple form	V-ing form
could I not intergraft? could you not intergraft? could he not intergraft? could we not intergraft? could you not intergraft? could they not intergraft?	could I not be intergrafting? could you not be intergrafting? could he not be intergrafting? could we not be intergrafting? could you not be intergrafting? could they not be intergrafting?
Perfect	V-ing perfect
could I not have intergrafted? could you not have intergrafted? could he not have intergrafted? could we not have intergrafted? could you not have intergrafted? could they not have intergrafted?	could I not have been intergrafting? could you not have been intergrafting? could he not have been intergrafting? could we not have been intergrafting? could you not have been intergrafting? could they not have been intergrafting?