English verb conjugation COULD STOPPER

Regular verb: stopper - stoppered - stoppered

Affirmation

Simple form

I could stopper
you could stopper
she could stopper
we could stopper
you could stopper
they could stopper

V-ing form

I could be stoppering
you could be stoppering
she could be stoppering
we could be stoppering
you could be stoppering
they could be stoppering

Perfect

I could have stoppered
you could have stoppered
she could have stoppered
we could have stoppered
you could have stoppered
they could have stoppered

V-ing perfect

I could have been stoppering
you could have been stoppering
she could have been stoppering
we could have been stoppering
you could have been stoppering
they could have been stoppering

Negation

Simple form

I could not stopper
you could not stopper
she could not stopper
we could not stopper
you could not stopper
they could not stopper

V-ing form

I could not be stoppering
you could not be stoppering
she could not be stoppering
we could not be stoppering
you could not be stoppering
they could not be stoppering

Perfect

I could not have stoppered
you could not have stoppered
she could not have stoppered
we could not have stoppered
you could not have stoppered
they could not have stoppered

V-ing perfect

I could not have been stoppering
you could not have been stoppering
she could not have been stoppering
we could not have been stoppering
you could not have been stoppering
they could not have been stoppering

Interrogative form

Simple form

could I stopper?
could you stopper?
could she stopper?
could we stopper?
could you stopper?
could they stopper?

V-ing form

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

Perfect

could I have stoppered?
could you have stoppered?
could she have stoppered?
could we have stoppered?
could you have stoppered?
could they have stoppered?

V-ing perfect

could I have been stoppering?
could you have been stoppering?
could she have been stoppering?
could we have been stoppering?
could you have been stoppering?
could they have been stoppering?

Interro-negative form

Simple form

could I not stopper?
could you not stopper?
could she not stopper?
could we not stopper?
could you not stopper?
could they not stopper?

V-ing form

could I not be stoppering?
could you not be stoppering?
could she not be stoppering?
could we not be stoppering?
could you not be stoppering?
could they not be stoppering?

Perfect

could I not have stoppered?
could you not have stoppered?
could she not have stoppered?
could we not have stoppered?
could you not have stoppered?
could they not have stoppered?

V-ing perfect

could I not have been stoppering?
could you not have been stoppering?
could she not have been stoppering?
could we not have been stoppering?
could you not have been stoppering?
could they not have been stoppering?

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