should pass
Regular verb: pass - passed- passed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?