English verb conjugation
COULD FIREPROOF

Regular verb: fireproof - fireproofed - fireproofed

Affirmation

Simple form	V-ing form
I could fireproof you could fireproof he could fireproof we could fireproof you could fireproof they could fireproof	I could be fireproofing you could be fireproofing he could be fireproofing we could be fireproofing you could be fireproofing they could be fireproofing
Perfect	V-ing perfect
I could have fireproofed you could have fireproofed he could have fireproofed we could have fireproofed you could have fireproofed they could have fireproofed	I could have been fireproofing you could have been fireproofing he could have been fireproofing we could have been fireproofing you could have been fireproofing they could have been fireproofing

Negation

Simple form	V-ing form
I couldn't fireproof you couldn't fireproof he couldn't fireproof we couldn't fireproof you couldn't fireproof they couldn't fireproof	I couldn't be fireproofing you couldn't be fireproofing he couldn't be fireproofing we couldn't be fireproofing you couldn't be fireproofing they couldn't be fireproofing
Perfect	V-ing perfect
I couldn't have fireproofed you couldn't have fireproofed he couldn't have fireproofed we couldn't have fireproofed you couldn't have fireproofed they couldn't have fireproofed	I couldn't have been fireproofing you couldn't have been fireproofing he couldn't have been fireproofing we couldn't have been fireproofing you couldn't have been fireproofing they couldn't have been fireproofing

Interrogative form

Simple form	V-ing form
could I fireproof? could you fireproof? could he fireproof? could we fireproof? could you fireproof? could they fireproof?	could I be fireproofing? could you be fireproofing? could he be fireproofing? could we be fireproofing? could you be fireproofing? could they be fireproofing?
Perfect	V-ing perfect
could I have fireproofed? could you have fireproofed? could he have fireproofed? could we have fireproofed? could you have fireproofed? could they have fireproofed?	could I have been fireproofing? could you have been fireproofing? could he have been fireproofing? could we have been fireproofing? could you have been fireproofing? could they have been fireproofing?

Interro-negative form

Simple form	V-ing form
couldn't I fireproof? couldn't you fireproof? couldn't he fireproof? couldn't we fireproof? couldn't you fireproof? couldn't they fireproof?	couldn't I be fireproofing? couldn't you be fireproofing? couldn't he be fireproofing? couldn't we be fireproofing? couldn't you be fireproofing? couldn't they be fireproofing?
Perfect	V-ing perfect
couldn't I have fireproofed? couldn't you have fireproofed? couldn't he have fireproofed? couldn't we have fireproofed? couldn't you have fireproofed? couldn't they have fireproofed?	couldn't I have been fireproofing? couldn't you have been fireproofing? couldn't he have been fireproofing? couldn't we have been fireproofing? couldn't you have been fireproofing? couldn't they have been fireproofing?