English verb conjugation COULD UNSCREW

Regular verb: unscrew - unscrewed - unscrewed

Affirmation

Simple form

I could unscrew
you could unscrew
he could unscrew
we could unscrew
you could unscrew
they could unscrew

V-ing form

I could be unscrewing
you could be unscrewing
he could be unscrewing
we could be unscrewing
you could be unscrewing
they could be unscrewing

Perfect

I could have unscrewed
you could have unscrewed
he could have unscrewed
we could have unscrewed
you could have unscrewed
they could have unscrewed

V-ing perfect

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

Negation

Simple form

I couldn't unscrew
you couldn't unscrew
he couldn't unscrew
we couldn't unscrew
you couldn't unscrew
they couldn't unscrew

V-ing form

I couldn't be unscrewing
you couldn't be unscrewing
he couldn't be unscrewing
we couldn't be unscrewing
you couldn't be unscrewing
they couldn't be unscrewing

Perfect

I couldn't have unscrewed
you couldn't have unscrewed
he couldn't have unscrewed
we couldn't have unscrewed
you couldn't have unscrewed
they couldn't have unscrewed

V-ing perfect

I couldn't have been unscrewing
you couldn't have been unscrewing
he couldn't have been unscrewing
we couldn't have been unscrewing
you couldn't have been unscrewing
they couldn't have been unscrewing

Interrogative form

Simple form

could I unscrew?
could you unscrew?
could he unscrew?
could we unscrew?
could you unscrew?
could they unscrew?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I unscrew?
couldn't you unscrew?
couldn't he unscrew?
couldn't we unscrew?
couldn't you unscrew?
couldn't they unscrew?

V-ing form

couldn't I be unscrewing?
couldn't you be unscrewing?
couldn't he be unscrewing?
couldn't we be unscrewing?
couldn't you be unscrewing?
couldn't they be unscrewing?

Perfect

couldn't I have unscrewed?
couldn't you have unscrewed?
couldn't he have unscrewed?
couldn't we have unscrewed?
couldn't you have unscrewed?
couldn't they have unscrewed?

V-ing perfect

couldn't I have been unscrewing?
couldn't you have been unscrewing?
couldn't he have been unscrewing?
couldn't we have been unscrewing?
couldn't you have been unscrewing?
couldn't they have been unscrewing?

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