English verb conjugation COULD SCREW

Regular verb: screw - screwed - screwed

Affirmation

Simple form

I could screw
you could screw
she could screw
we could screw
you could screw
they could screw

V-ing form

I could be screwing
you could be screwing
she could be screwing
we could be screwing
you could be screwing
they could be screwing

Perfect

I could have screwed
you could have screwed
she could have screwed
we could have screwed
you could have screwed
they could have screwed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I screw?
could you screw?
could she screw?
could we screw?
could you screw?
could they screw?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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