English verb conjugation COULD FORM

Regular verb: form - formed - formed

Affirmation

Simple form

I could form
you could form
he could form
we could form
you could form
they could form

V-ing form

I could be forming
you could be forming
he could be forming
we could be forming
you could be forming
they could be forming

Perfect

I could have formed
you could have formed
he could have formed
we could have formed
you could have formed
they could have formed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I form?
could you form?
could he form?
could we form?
could you form?
could they form?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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