English verb conjugation COULD CONFIRM

Regular verb: confirm - confirmed - confirmed


Affirmation

Simple form

I could confirm
you could confirm
he could confirm
we could confirm
you could confirm
they could confirm

V-ing form

I could be confirming
you could be confirming
he could be confirming
we could be confirming
you could be confirming
they could be confirming

Perfect

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

V-ing perfect

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

Negation

Simple form

I could not confirm
you could not confirm
he could not confirm
we could not confirm
you could not confirm
they could not confirm

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I confirm?
could you confirm?
could he confirm?
could we confirm?
could you confirm?
could they confirm?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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