should proof
Regular verb: proof - proofed- proofed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd proof
you'd proof
he'd proof
we'd proof
you'd proof
they'd proof 	I'd be proofing
you'd be proofing
he'd be proofing
we'd be proofing
you'd be proofing
they'd be proofing	I should've proofed
you should've proofed
he should've proofed
we should've proofed
you should've proofed
they should've proofed	I should've been proofing
you should've been proofing
he should've been proofing
we should've been proofing
you should've been proofing
they should've been proofing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't proof
you shouldn't proof
he shouldn't proof
we shouldn't proof
you shouldn't proof
they shouldn't proof 	I shouldn't be proofing
you shouldn't be proofing
he shouldn't be proofing
we shouldn't be proofing
you shouldn't be proofing
they shouldn't be proofing	I shouldn't have proofed
you shouldn't have proofed
he shouldn't have proofed
we shouldn't have proofed
you shouldn't have proofed
they shouldn't have proofed	I shouldn't have been proofing
you shouldn't have been proofing
he shouldn't have been proofing
we shouldn't have been proofing
you shouldn't have been proofing
they shouldn't have been proofing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I proof?
should you proof?
should he proof?
should we proof?
should you proof?
should they proof? 	should I be proofing?
should you be proofing?
should he be proofing?
should we be proofing?
should you be proofing?
should they be proofing? 	should I have proofed?
should you have proofed?
should he have proofed?
should we have proofed?
should you have proofed?
should they have proofed? 	should I have been proofing?
should you have been proofing?
should he have been proofing?
should we have been proofing?
should you have been proofing?
should they have been proofing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I proof?
shouldn't you proof?
shouldn't he proof?
shouldn't we proof?
shouldn't you proof?
shouldn't they proof? 	shouldn't I be proofing?
shouldn't you be proofing?
shouldn't he be proofing?
shouldn't we be proofing?
shouldn't you be proofing?
shouldn't they be proofing? 	shouldn't I have proofed?
shouldn't you have proofed?
shouldn't he have proofed?
shouldn't we have proofed?
shouldn't you have proofed?
shouldn't they have proofed? 	shouldn't I have been proofing?
shouldn't you have been proofing?
shouldn't he have been proofing?
shouldn't we have been proofing?
shouldn't you have been proofing?
shouldn't they have been proofing?