should waterproof
Regular verb: waterproof - waterproofed- waterproofed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd waterproof
you'd waterproof
she'd waterproof
we'd waterproof
you'd waterproof
they'd waterproof 	I'd be waterproofing
you'd be waterproofing
she'd be waterproofing
we'd be waterproofing
you'd be waterproofing
they'd be waterproofing	I should've waterproofed
you should've waterproofed
she should've waterproofed
we should've waterproofed
you should've waterproofed
they should've waterproofed	I should've been waterproofing
you should've been waterproofing
she should've been waterproofing
we should've been waterproofing
you should've been waterproofing
they should've been waterproofing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't waterproof
you shouldn't waterproof
she shouldn't waterproof
we shouldn't waterproof
you shouldn't waterproof
they shouldn't waterproof 	I shouldn't be waterproofing
you shouldn't be waterproofing
she shouldn't be waterproofing
we shouldn't be waterproofing
you shouldn't be waterproofing
they shouldn't be waterproofing	I shouldn't have waterproofed
you shouldn't have waterproofed
she shouldn't have waterproofed
we shouldn't have waterproofed
you shouldn't have waterproofed
they shouldn't have waterproofed	I shouldn't have been waterproofing
you shouldn't have been waterproofing
she shouldn't have been waterproofing
we shouldn't have been waterproofing
you shouldn't have been waterproofing
they shouldn't have been waterproofing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I waterproof?
should you waterproof?
should she waterproof?
should we waterproof?
should you waterproof?
should they waterproof? 	should I be waterproofing?
should you be waterproofing?
should she be waterproofing?
should we be waterproofing?
should you be waterproofing?
should they be waterproofing? 	should I have waterproofed?
should you have waterproofed?
should she have waterproofed?
should we have waterproofed?
should you have waterproofed?
should they have waterproofed? 	should I have been waterproofing?
should you have been waterproofing?
should she have been waterproofing?
should we have been waterproofing?
should you have been waterproofing?
should they have been waterproofing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I waterproof?
shouldn't you waterproof?
shouldn't she waterproof?
shouldn't we waterproof?
shouldn't you waterproof?
shouldn't they waterproof? 	shouldn't I be waterproofing?
shouldn't you be waterproofing?
shouldn't she be waterproofing?
shouldn't we be waterproofing?
shouldn't you be waterproofing?
shouldn't they be waterproofing? 	shouldn't I have waterproofed?
shouldn't you have waterproofed?
shouldn't she have waterproofed?
shouldn't we have waterproofed?
shouldn't you have waterproofed?
shouldn't they have waterproofed? 	shouldn't I have been waterproofing?
shouldn't you have been waterproofing?
shouldn't she have been waterproofing?
shouldn't we have been waterproofing?
shouldn't you have been waterproofing?
shouldn't they have been waterproofing?