English verb conjugation COULD REGISTER

Regular verb: register - registered - registered

Affirmation

Simple form

I could register
you could register
he could register
we could register
you could register
they could register

V-ing form

I could be registering
you could be registering
he could be registering
we could be registering
you could be registering
they could be registering

Perfect

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

V-ing perfect

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

Negation

Simple form

I could not register
you could not register
he could not register
we could not register
you could not register
they could not register

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I register?
could you register?
could he register?
could we register?
could you register?
could they register?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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