English verb conjugation COULD RETIGHTEN

Regular verb: retighten - retightened - retightened

Affirmation

Simple form

I could retighten
you could retighten
he could retighten
we could retighten
you could retighten
they could retighten

V-ing form

I could be retightening
you could be retightening
he could be retightening
we could be retightening
you could be retightening
they could be retightening

Perfect

I could have retightened
you could have retightened
he could have retightened
we could have retightened
you could have retightened
they could have retightened

V-ing perfect

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

Negation

Simple form

I could not retighten
you could not retighten
he could not retighten
we could not retighten
you could not retighten
they could not retighten

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I retighten?
could you retighten?
could he retighten?
could we retighten?
could you retighten?
could they retighten?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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