English verb conjugation
SHOULD SCREEN

Regular verb: screen - screened - screened

Affirmation

Simple form	V-ing form
I should screen you should screen he should screen we should screen you should screen they should screen	I should be screening you should be screening he should be screening we should be screening you should be screening they should be screening
Perfect	V-ing perfect
I should have screened you should have screened he should have screened we should have screened you should have screened they should have screened	I should have been screening you should have been screening he should have been screening we should have been screening you should have been screening they should have been screening

Negation

Simple form	V-ing form
I should not screen you should not screen he should not screen we should not screen you should not screen they should not screen	I should not be screening you should not be screening he should not be screening we should not be screening you should not be screening they should not be screening
Perfect	V-ing perfect
I should not have screened you should not have screened he should not have screened we should not have screened you should not have screened they should not have screened	I should not have been screening you should not have been screening he should not have been screening we should not have been screening you should not have been screening they should not have been screening

Interrogative form

Simple form	V-ing form
should I screen? should you screen? should he screen? should we screen? should you screen? should they screen?	should I be screening? should you be screening? should he be screening? should we be screening? should you be screening? should they be screening?
Perfect	V-ing perfect
should I have screened? should you have screened? should he have screened? should we have screened? should you have screened? should they have screened?	should I have been screening? should you have been screening? should he have been screening? should we have been screening? should you have been screening? should they have been screening?

Interro-negative form

Simple form	V-ing form
should I not screen? should you not screen? should he not screen? should we not screen? should you not screen? should they not screen?	should I not be screening? should you not be screening? should he not be screening? should we not be screening? should you not be screening? should they not be screening?
Perfect	V-ing perfect
should I not have screened? should you not have screened? should he not have screened? should we not have screened? should you not have screened? should they not have screened?	should I not have been screening? should you not have been screening? should he not have been screening? should we not have been screening? should you not have been screening? should they not have been screening?