English verb conjugation
CAN BUTT

Regular verb: butt - butted - butted

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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