English verb conjugation COULD SCREEN

Regular verb: screen - screened - screened

Affirmation

Simple form

I could screen
you could screen
he could screen
we could screen
you could screen
they could screen

V-ing form

I could be screening
you could be screening
he could be screening
we could be screening
you could be screening
they could be screening

Perfect

I could have screened
you could have screened
he could have screened
we could have screened
you could have screened
they could have screened

V-ing perfect

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

Negation

Simple form

I could not screen
you could not screen
he could not screen
we could not screen
you could not screen
they could not screen

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I screen?
could you screen?
could he screen?
could we screen?
could you screen?
could they screen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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