English verb conjugation
SHOULD SCREEN

Regular verb: screen - screened - screened

Affirmation

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

Negation

Simple form	V-ing form
I shouldn't screen you shouldn't screen he shouldn't screen we shouldn't screen you shouldn't screen they shouldn't screen	I shouldn't be screening you shouldn't be screening he shouldn't be screening we shouldn't be screening you shouldn't be screening they shouldn't be screening
Perfect	V-ing perfect
I shouldn't have screened you shouldn't have screened he shouldn't have screened we shouldn't have screened you shouldn't have screened they shouldn't have screened	I shouldn't have been screening you shouldn't have been screening he shouldn't have been screening we shouldn't have been screening you shouldn't have been screening they shouldn't 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
shouldn't I screen? shouldn't you screen? shouldn't he screen? shouldn't we screen? shouldn't you screen? shouldn't they screen?	shouldn't I be screening? shouldn't you be screening? shouldn't he be screening? shouldn't we be screening? shouldn't you be screening? shouldn't they be screening?
Perfect	V-ing perfect
shouldn't I have screened? shouldn't you have screened? shouldn't he have screened? shouldn't we have screened? shouldn't you have screened? shouldn't they have screened?	shouldn't I have been screening? shouldn't you have been screening? shouldn't he have been screening? shouldn't we have been screening? shouldn't you have been screening? shouldn't they have been screening?