English verb conjugation COULD CERTIFICATE

Regular verb: certificate - certificated - certificated

Affirmation

Simple form

I could certificate
you could certificate
he could certificate
we could certificate
you could certificate
they could certificate

V-ing form

I could be certificating
you could be certificating
he could be certificating
we could be certificating
you could be certificating
they could be certificating

Perfect

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

V-ing perfect

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

Negation

Simple form

I could not certificate
you could not certificate
he could not certificate
we could not certificate
you could not certificate
they could not certificate

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I certificate?
could you certificate?
could he certificate?
could we certificate?
could you certificate?
could they certificate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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