English verb conjugation COULD BUTTER

Regular verb: butter - buttered - buttered

Affirmation

Simple form

I could butter
you could butter
he could butter
we could butter
you could butter
they could butter

V-ing form

I could be buttering
you could be buttering
he could be buttering
we could be buttering
you could be buttering
they could be buttering

Perfect

I could have buttered
you could have buttered
he could have buttered
we could have buttered
you could have buttered
they could have buttered

V-ing perfect

I could have been buttering
you could have been buttering
he could have been buttering
we could have been buttering
you could have been buttering
they could have been buttering

Negation

Simple form

I couldn't butter
you couldn't butter
he couldn't butter
we couldn't butter
you couldn't butter
they couldn't butter

V-ing form

I couldn't be buttering
you couldn't be buttering
he couldn't be buttering
we couldn't be buttering
you couldn't be buttering
they couldn't be buttering

Perfect

I couldn't have buttered
you couldn't have buttered
he couldn't have buttered
we couldn't have buttered
you couldn't have buttered
they couldn't have buttered

V-ing perfect

I couldn't have been buttering
you couldn't have been buttering
he couldn't have been buttering
we couldn't have been buttering
you couldn't have been buttering
they couldn't have been buttering

Interrogative form

Simple form

could I butter?
could you butter?
could he butter?
could we butter?
could you butter?
could they butter?

V-ing form

could I be buttering?
could you be buttering?
could he be buttering?
could we be buttering?
could you be buttering?
could they be buttering?

Perfect

could I have buttered?
could you have buttered?
could he have buttered?
could we have buttered?
could you have buttered?
could they have buttered?

V-ing perfect

could I have been buttering?
could you have been buttering?
could he have been buttering?
could we have been buttering?
could you have been buttering?
could they have been buttering?

Interro-negative form

Simple form

couldn't I butter?
couldn't you butter?
couldn't he butter?
couldn't we butter?
couldn't you butter?
couldn't they butter?

V-ing form

couldn't I be buttering?
couldn't you be buttering?
couldn't he be buttering?
couldn't we be buttering?
couldn't you be buttering?
couldn't they be buttering?

Perfect

couldn't I have buttered?
couldn't you have buttered?
couldn't he have buttered?
couldn't we have buttered?
couldn't you have buttered?
couldn't they have buttered?

V-ing perfect

couldn't I have been buttering?
couldn't you have been buttering?
couldn't he have been buttering?
couldn't we have been buttering?
couldn't you have been buttering?
couldn't they have been buttering?

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