English verb conjugation
COULD BUTT

Regular verb: butt - butted - butted

Affirmation

Simple form	V-ing form
I could butt you could butt he could butt we could butt you could butt they could butt	I could be butting you could be butting he could be butting we could be butting you could be butting they could be butting
Perfect	V-ing perfect
I could have butted you could have butted he could have butted we could have butted you could have butted they could have butted	I could have been butting you could have been butting he could have been butting we could have been butting you could have been butting they could have been butting

Negation

Simple form	V-ing form
I could not butt you could not butt he could not butt we could not butt you could not butt they could not butt	I could not be butting you could not be butting he could not be butting we could not be butting you could not be butting they could not be butting
Perfect	V-ing perfect
I could not have butted you could not have butted he could not have butted we could not have butted you could not have butted they could not have butted	I could not have been butting you could not have been butting he could not have been butting we could not have been butting you could not have been butting they could not have been butting

Interrogative form

Simple form	V-ing form
could I butt? could you butt? could he butt? could we butt? could you butt? could they butt?	could I be butting? could you be butting? could he be butting? could we be butting? could you be butting? could they be butting?
Perfect	V-ing perfect
could I have butted? could you have butted? could he have butted? could we have butted? could you have butted? could they have butted?	could I have been butting? could you have been butting? could he have been butting? could we have been butting? could you have been butting? could they have been butting?

Interro-negative form

Simple form	V-ing form
could I not butt? could you not butt? could he not butt? could we not butt? could you not butt? could they not butt?	could I not be butting? could you not be butting? could he not be butting? could we not be butting? could you not be butting? could they not be butting?
Perfect	V-ing perfect
could I not have butted? could you not have butted? could he not have butted? could we not have butted? could you not have butted? could they not have butted?	could I not have been butting? could you not have been butting? could he not have been butting? could we not have been butting? could you not have been butting? could they not have been butting?