English verb conjugation
COULD RAINPROOF

Regular verb: rainproof - rainproofed - rainproofed

Affirmation

Simple form	V-ing form
I could rainproof you could rainproof she could rainproof we could rainproof you could rainproof they could rainproof	I could be rainproofing you could be rainproofing she could be rainproofing we could be rainproofing you could be rainproofing they could be rainproofing
Perfect	V-ing perfect
I could have rainproofed you could have rainproofed she could have rainproofed we could have rainproofed you could have rainproofed they could have rainproofed	I could have been rainproofing you could have been rainproofing she could have been rainproofing we could have been rainproofing you could have been rainproofing they could have been rainproofing

Negation

Simple form	V-ing form
I couldn't rainproof you couldn't rainproof she couldn't rainproof we couldn't rainproof you couldn't rainproof they couldn't rainproof	I couldn't be rainproofing you couldn't be rainproofing she couldn't be rainproofing we couldn't be rainproofing you couldn't be rainproofing they couldn't be rainproofing
Perfect	V-ing perfect
I couldn't have rainproofed you couldn't have rainproofed she couldn't have rainproofed we couldn't have rainproofed you couldn't have rainproofed they couldn't have rainproofed	I couldn't have been rainproofing you couldn't have been rainproofing she couldn't have been rainproofing we couldn't have been rainproofing you couldn't have been rainproofing they couldn't have been rainproofing

Interrogative form

Simple form	V-ing form
could I rainproof? could you rainproof? could she rainproof? could we rainproof? could you rainproof? could they rainproof?	could I be rainproofing? could you be rainproofing? could she be rainproofing? could we be rainproofing? could you be rainproofing? could they be rainproofing?
Perfect	V-ing perfect
could I have rainproofed? could you have rainproofed? could she have rainproofed? could we have rainproofed? could you have rainproofed? could they have rainproofed?	could I have been rainproofing? could you have been rainproofing? could she have been rainproofing? could we have been rainproofing? could you have been rainproofing? could they have been rainproofing?

Interro-negative form

Simple form	V-ing form
couldn't I rainproof? couldn't you rainproof? couldn't she rainproof? couldn't we rainproof? couldn't you rainproof? couldn't they rainproof?	couldn't I be rainproofing? couldn't you be rainproofing? couldn't she be rainproofing? couldn't we be rainproofing? couldn't you be rainproofing? couldn't they be rainproofing?
Perfect	V-ing perfect
couldn't I have rainproofed? couldn't you have rainproofed? couldn't she have rainproofed? couldn't we have rainproofed? couldn't you have rainproofed? couldn't they have rainproofed?	couldn't I have been rainproofing? couldn't you have been rainproofing? couldn't she have been rainproofing? couldn't we have been rainproofing? couldn't you have been rainproofing? couldn't they have been rainproofing?