English verb conjugation COULD CONFIRM

Regular verb: confirm - confirmed - confirmed

Affirmation

Simple form

I could confirm
you could confirm
she could confirm
we could confirm
you could confirm
they could confirm

V-ing form

I could be confirming
you could be confirming
she could be confirming
we could be confirming
you could be confirming
they could be confirming

Perfect

I could have confirmed
you could have confirmed
she 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
she could have been confirming
we could have been confirming
you could have been confirming
they could have been confirming

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I confirm?
could you confirm?
could she confirm?
could we confirm?
could you confirm?
could they confirm?

V-ing form

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

Perfect

could I have confirmed?
could you have confirmed?
could she 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 she have been confirming?
could we have been confirming?
could you have been confirming?
could they have been confirming?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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