English verb conjugation
COULD GRIFT

Regular verb: grift - grifted - grifted

Affirmation

Simple form	V-ing form
I could grift you could grift he could grift we could grift you could grift they could grift	I could be grifting you could be grifting he could be grifting we could be grifting you could be grifting they could be grifting
Perfect	V-ing perfect
I could have grifted you could have grifted he could have grifted we could have grifted you could have grifted they could have grifted	I could have been grifting you could have been grifting he could have been grifting we could have been grifting you could have been grifting they could have been grifting

Negation

Simple form	V-ing form
I couldn't grift you couldn't grift he couldn't grift we couldn't grift you couldn't grift they couldn't grift	I couldn't be grifting you couldn't be grifting he couldn't be grifting we couldn't be grifting you couldn't be grifting they couldn't be grifting
Perfect	V-ing perfect
I couldn't have grifted you couldn't have grifted he couldn't have grifted we couldn't have grifted you couldn't have grifted they couldn't have grifted	I couldn't have been grifting you couldn't have been grifting he couldn't have been grifting we couldn't have been grifting you couldn't have been grifting they couldn't have been grifting

Interrogative form

Simple form	V-ing form
could I grift? could you grift? could he grift? could we grift? could you grift? could they grift?	could I be grifting? could you be grifting? could he be grifting? could we be grifting? could you be grifting? could they be grifting?
Perfect	V-ing perfect
could I have grifted? could you have grifted? could he have grifted? could we have grifted? could you have grifted? could they have grifted?	could I have been grifting? could you have been grifting? could he have been grifting? could we have been grifting? could you have been grifting? could they have been grifting?

Interro-negative form

Simple form	V-ing form
couldn't I grift? couldn't you grift? couldn't he grift? couldn't we grift? couldn't you grift? couldn't they grift?	couldn't I be grifting? couldn't you be grifting? couldn't he be grifting? couldn't we be grifting? couldn't you be grifting? couldn't they be grifting?
Perfect	V-ing perfect
couldn't I have grifted? couldn't you have grifted? couldn't he have grifted? couldn't we have grifted? couldn't you have grifted? couldn't they have grifted?	couldn't I have been grifting? couldn't you have been grifting? couldn't he have been grifting? couldn't we have been grifting? couldn't you have been grifting? couldn't they have been grifting?