English verb conjugation
MUST RAINPROOF

Regular verb: rainproof - rainproofed - rainproofed

Affirmation

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

Negation

Simple form	V-ing form
I must not rainproof you must not rainproof she must not rainproof we must not rainproof you must not rainproof they must not rainproof	I must not be rainproofing you must not be rainproofing she must not be rainproofing we must not be rainproofing you must not be rainproofing they must not be rainproofing
Perfect	V-ing perfect
I must not have rainproofed you must not have rainproofed she must not have rainproofed we must not have rainproofed you must not have rainproofed they must not have rainproofed	I must not have been rainproofing you must not have been rainproofing she must not have been rainproofing we must not have been rainproofing you must not have been rainproofing they must not have been rainproofing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not rainproof? must you not rainproof? must she not rainproof? must we not rainproof? must you not rainproof? must they not rainproof?	must I not be rainproofing? must you not be rainproofing? must she not be rainproofing? must we not be rainproofing? must you not be rainproofing? must they not be rainproofing?
Perfect	V-ing perfect
must I not have rainproofed? must you not have rainproofed? must she not have rainproofed? must we not have rainproofed? must you not have rainproofed? must they not have rainproofed?	must I not have been rainproofing? must you not have been rainproofing? must she not have been rainproofing? must we not have been rainproofing? must you not have been rainproofing? must they not have been rainproofing?