English verb conjugation COULD HAVE

Irregular verb: have - had - had


Affirmation

Simple form

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

V-ing form

I could be having
you could be having
he could be having
we could be having
you could be having
they could be having

Perfect

I could have had
you could have had
he could have had
we could have had
you could have had
they could have had

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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