English verb conjugation COULD CASE

Regular verb: case - cased - cased

Affirmation

Simple form

I could case
you could case
she could case
we could case
you could case
they could case

V-ing form

I could be casing
you could be casing
she could be casing
we could be casing
you could be casing
they could be casing

Perfect

I could have cased
you could have cased
she could have cased
we could have cased
you could have cased
they could have cased

V-ing perfect

I could have been casing
you could have been casing
she could have been casing
we could have been casing
you could have been casing
they could have been casing

Negation

Simple form

I couldn't case
you couldn't case
she couldn't case
we couldn't case
you couldn't case
they couldn't case

V-ing form

I couldn't be casing
you couldn't be casing
she couldn't be casing
we couldn't be casing
you couldn't be casing
they couldn't be casing

Perfect

I couldn't have cased
you couldn't have cased
she couldn't have cased
we couldn't have cased
you couldn't have cased
they couldn't have cased

V-ing perfect

I couldn't have been casing
you couldn't have been casing
she couldn't have been casing
we couldn't have been casing
you couldn't have been casing
they couldn't have been casing

Interrogative form

Simple form

could I case?
could you case?
could she case?
could we case?
could you case?
could they case?

V-ing form

could I be casing?
could you be casing?
could she be casing?
could we be casing?
could you be casing?
could they be casing?

Perfect

could I have cased?
could you have cased?
could she have cased?
could we have cased?
could you have cased?
could they have cased?

V-ing perfect

could I have been casing?
could you have been casing?
could she have been casing?
could we have been casing?
could you have been casing?
could they have been casing?

Interro-negative form

Simple form

couldn't I case?
couldn't you case?
couldn't she case?
couldn't we case?
couldn't you case?
couldn't they case?

V-ing form

couldn't I be casing?
couldn't you be casing?
couldn't she be casing?
couldn't we be casing?
couldn't you be casing?
couldn't they be casing?

Perfect

couldn't I have cased?
couldn't you have cased?
couldn't she have cased?
couldn't we have cased?
couldn't you have cased?
couldn't they have cased?

V-ing perfect

couldn't I have been casing?
couldn't you have been casing?
couldn't she have been casing?
couldn't we have been casing?
couldn't you have been casing?
couldn't they have been casing?

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