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 couldn't stopper
you couldn't stopper
she couldn't stopper
we couldn't stopper
you couldn't stopper
they couldn't stopper

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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