English verb conjugation
SHOULD SCREEN

Regular verb: screen - screened - screened

Affirmation

Simple form	V-ing form
I should screen you should screen she should screen we should screen you should screen they should screen	I should be screening you should be screening she 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 she 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 she 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 she 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 she 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 she 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 she 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 she screen? should we screen? should you screen? should they screen?	should I be screening? should you be screening? should she 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 she 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 she 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 she 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 she 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 she 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 she not have been screening? should we not have been screening? should you not have been screening? should they not have been screening?