must rainproof
Regular verb: rainproof - rainproofed- rainproofed

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

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