English verb conjugation COULD CREASE

Regular verb: crease - creased - creased

Affirmation

Simple form

I could crease
you could crease
she could crease
we could crease
you could crease
they could crease

V-ing form

I could be creasing
you could be creasing
she could be creasing
we could be creasing
you could be creasing
they could be creasing

Perfect

I could have creased
you could have creased
she could have creased
we could have creased
you could have creased
they could have creased

V-ing perfect

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

Negation

Simple form

I could not crease
you could not crease
she could not crease
we could not crease
you could not crease
they could not crease

V-ing form

I could not be creasing
you could not be creasing
she could not be creasing
we could not be creasing
you could not be creasing
they could not be creasing

Perfect

I could not have creased
you could not have creased
she could not have creased
we could not have creased
you could not have creased
they could not have creased

V-ing perfect

I could not have been creasing
you could not have been creasing
she could not have been creasing
we could not have been creasing
you could not have been creasing
they could not have been creasing

Interrogative form

Simple form

could I crease?
could you crease?
could she crease?
could we crease?
could you crease?
could they crease?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not crease?
could you not crease?
could she not crease?
could we not crease?
could you not crease?
could they not crease?

V-ing form

could I not be creasing?
could you not be creasing?
could she not be creasing?
could we not be creasing?
could you not be creasing?
could they not be creasing?

Perfect

could I not have creased?
could you not have creased?
could she not have creased?
could we not have creased?
could you not have creased?
could they not have creased?

V-ing perfect

could I not have been creasing?
could you not have been creasing?
could she not have been creasing?
could we not have been creasing?
could you not have been creasing?
could they not have been creasing?

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