English verb conjugation
SHOULD PASS

Regular verb: pass - passed - passed

Affirmation

Simple form	V-ing form
I'd pass you'd pass he'd pass we'd pass you'd pass they'd pass	I'd be passing you'd be passing he'd be passing we'd be passing you'd be passing they'd be passing
Perfect	V-ing perfect
I should've passed you should've passed he should've passed we should've passed you should've passed they should've passed	I should've been passing you should've been passing he should've been passing we should've been passing you should've been passing they should've been passing

Negation

Simple form	V-ing form
I shouldn't pass you shouldn't pass he shouldn't pass we shouldn't pass you shouldn't pass they shouldn't pass	I shouldn't be passing you shouldn't be passing he shouldn't be passing we shouldn't be passing you shouldn't be passing they shouldn't be passing
Perfect	V-ing perfect
I shouldn't have passed you shouldn't have passed he shouldn't have passed we shouldn't have passed you shouldn't have passed they shouldn't have passed	I shouldn't have been passing you shouldn't have been passing he shouldn't have been passing we shouldn't have been passing you shouldn't have been passing they shouldn't have been passing

Interrogative form

Simple form	V-ing form
should I pass? should you pass? should he pass? should we pass? should you pass? should they pass?	should I be passing? should you be passing? should he be passing? should we be passing? should you be passing? should they be passing?
Perfect	V-ing perfect
should I have passed? should you have passed? should he have passed? should we have passed? should you have passed? should they have passed?	should I have been passing? should you have been passing? should he have been passing? should we have been passing? should you have been passing? should they have been passing?

Interro-negative form

Simple form	V-ing form
shouldn't I pass? shouldn't you pass? shouldn't he pass? shouldn't we pass? shouldn't you pass? shouldn't they pass?	shouldn't I be passing? shouldn't you be passing? shouldn't he be passing? shouldn't we be passing? shouldn't you be passing? shouldn't they be passing?
Perfect	V-ing perfect
shouldn't I have passed? shouldn't you have passed? shouldn't he have passed? shouldn't we have passed? shouldn't you have passed? shouldn't they have passed?	shouldn't I have been passing? shouldn't you have been passing? shouldn't he have been passing? shouldn't we have been passing? shouldn't you have been passing? shouldn't they have been passing?