English verb conjugation
MUST FIREPROOF

Regular verb: fireproof - fireproofed - fireproofed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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