English verb conjugation
SHOULD WATERPROOF

Regular verb: waterproof - waterproofed - waterproofed

Affirmation

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

Negation

Simple form	V-ing form
I should not waterproof you should not waterproof she should not waterproof we should not waterproof you should not waterproof they should not waterproof	I should not be waterproofing you should not be waterproofing she should not be waterproofing we should not be waterproofing you should not be waterproofing they should not be waterproofing
Perfect	V-ing perfect
I should not have waterproofed you should not have waterproofed she should not have waterproofed we should not have waterproofed you should not have waterproofed they should not have waterproofed	I should not have been waterproofing you should not have been waterproofing she 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	V-ing form
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?
Perfect	V-ing perfect
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
should I not waterproof? should you not waterproof? should she not waterproof? should we not waterproof? should you not waterproof? should they not waterproof?	should I not be waterproofing? should you not be waterproofing? should she not be waterproofing? should we not be waterproofing? should you not be waterproofing? should they not be waterproofing?
Perfect	V-ing perfect
should I not have waterproofed? should you not have waterproofed? should she not have waterproofed? should we not have waterproofed? should you not have waterproofed? should they not have waterproofed?	should I not have been waterproofing? should you not have been waterproofing? should she not have been waterproofing? should we not have been waterproofing? should you not have been waterproofing? should they not have been waterproofing?