English verb conjugation COULD SCREW

Regular verb: screw - screwed - screwed

Affirmation

Simple form

I could screw
you could screw
he could screw
we could screw
you could screw
they could screw

V-ing form

I could be screwing
you could be screwing
he could be screwing
we could be screwing
you could be screwing
they could be screwing

Perfect

I could have screwed
you could have screwed
he 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
he could have been screwing
we could have been screwing
you could have been screwing
they could have been screwing

Negation

Simple form

I could not screw
you could not screw
he could not screw
we could not screw
you could not screw
they could not screw

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I screw?
could you screw?
could he screw?
could we screw?
could you screw?
could they screw?

V-ing form

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

Perfect

could I have screwed?
could you have screwed?
could he 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 he have been screwing?
could we have been screwing?
could you have been screwing?
could they have been screwing?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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