English verb conjugation COULD RETIGHTEN

Regular verb: retighten - retightened - retightened

Affirmation

Simple form

I could retighten
you could retighten
she could retighten
we could retighten
you could retighten
they could retighten

V-ing form

I could be retightening
you could be retightening
she could be retightening
we could be retightening
you could be retightening
they could be retightening

Perfect

I could have retightened
you could have retightened
she 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
she could have been retightening
we could have been retightening
you could have been retightening
they could have been retightening

Negation

Simple form

I couldn't retighten
you couldn't retighten
she couldn't retighten
we couldn't retighten
you couldn't retighten
they couldn't retighten

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I retighten?
could you retighten?
could she retighten?
could we retighten?
could you retighten?
could they retighten?

V-ing form

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

Perfect

could I have retightened?
could you have retightened?
could she 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 she have been retightening?
could we have been retightening?
could you have been retightening?
could they have been retightening?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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