I should waterproof you should waterproof he should waterproof we should waterproof you should waterproof they should waterproof
V-ing form
I should be waterproofing you should be waterproofing he should be waterproofing we should be waterproofing you should be waterproofing they should be waterproofing
Perfect
I should have waterproofed you should have waterproofed he should have waterproofed we should have waterproofed you should have waterproofed they should have waterproofed
V-ing perfect
I should have been waterproofing you should have been waterproofing he should have been waterproofing we should have been waterproofing you should have been waterproofing they should have been waterproofing
Negation
Simple form
I should not waterproof you should not waterproof he should not waterproof we should not waterproof you should not waterproof they should not waterproof
V-ing form
I should not be waterproofing you should not be waterproofing he should not be waterproofing we should not be waterproofing you should not be waterproofing they should not be waterproofing
Perfect
I should not have waterproofed you should not have waterproofed he should not have waterproofed we should not have waterproofed you should not have waterproofed they should not have waterproofed
V-ing perfect
I should not have been waterproofing you should not have been waterproofing he should not have been waterproofing we should not have been waterproofing you should not have been waterproofing they should not have been waterproofing
Interrogative form
Simple form
should I waterproof? should you waterproof? should he waterproof? should we waterproof? should you waterproof? should they waterproof?
V-ing form
should I be waterproofing? should you be waterproofing? should he be waterproofing? should we be waterproofing? should you be waterproofing? should they be waterproofing?
Perfect
should I have waterproofed? should you have waterproofed? should he have waterproofed? should we have waterproofed? should you have waterproofed? should they have waterproofed?
V-ing perfect
should I have been waterproofing? should you have been waterproofing? should he have been waterproofing? should we have been waterproofing? should you have been waterproofing? should they have been waterproofing?
Interro-negative form
Simple form
should I not waterproof? should you not waterproof? should he not waterproof? should we not waterproof? should you not waterproof? should they not waterproof?
V-ing form
should I not be waterproofing? should you not be waterproofing? should he not be waterproofing? should we not be waterproofing? should you not be waterproofing? should they not be waterproofing?
Perfect
should I not have waterproofed? should you not have waterproofed? should he not have waterproofed? should we not have waterproofed? should you not have waterproofed? should they not have waterproofed?
V-ing perfect
should I not have been waterproofing? should you not have been waterproofing? should he not have been waterproofing? should we not have been waterproofing? should you not have been waterproofing? should they not have been waterproofing?