English verb conjugation COULD CASE

Regular verb: case - cased - cased

Affirmation

Simple form

I could case
you could case
he could case
we could case
you could case
they could case

V-ing form

I could be casing
you could be casing
he could be casing
we could be casing
you could be casing
they could be casing

Perfect

I could have cased
you could have cased
he 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
he could have been casing
we could have been casing
you could have been casing
they could have been casing

Negation

Simple form

I could not case
you could not case
he could not case
we could not case
you could not case
they could not case

V-ing form

I could not be casing
you could not be casing
he could not be casing
we could not be casing
you could not be casing
they could not be casing

Perfect

I could not have cased
you could not have cased
he could not have cased
we could not have cased
you could not have cased
they could not have cased

V-ing perfect

I could not have been casing
you could not have been casing
he could not have been casing
we could not have been casing
you could not have been casing
they could not have been casing

Interrogative form

Simple form

could I case?
could you case?
could he case?
could we case?
could you case?
could they case?

V-ing form

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

Perfect

could I have cased?
could you have cased?
could he 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 he have been casing?
could we have been casing?
could you have been casing?
could they have been casing?

Interro-negative form

Simple form

could I not case?
could you not case?
could he not case?
could we not case?
could you not case?
could they not case?

V-ing form

could I not be casing?
could you not be casing?
could he not be casing?
could we not be casing?
could you not be casing?
could they not be casing?

Perfect

could I not have cased?
could you not have cased?
could he not have cased?
could we not have cased?
could you not have cased?
could they not have cased?

V-ing perfect

could I not have been casing?
could you not have been casing?
could he not have been casing?
could we not have been casing?
could you not have been casing?
could they not have been casing?

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