must roof
Regular verb: roof - roofed- roofed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must roof
you must roof
he must roof
we must roof
you must roof
they must roof 	I must be roofing
you must be roofing
he must be roofing
we must be roofing
you must be roofing
they must be roofing	I must have roofed
you must have roofed
he must have roofed
we must have roofed
you must have roofed
they must have roofed	I must have been roofing
you must have been roofing
he must have been roofing
we must have been roofing
you must have been roofing
they must have been roofing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't roof
you mustn't roof
he mustn't roof
we mustn't roof
you mustn't roof
they mustn't roof 	I mustn't be roofing
you mustn't be roofing
he mustn't be roofing
we mustn't be roofing
you mustn't be roofing
they mustn't be roofing	I mustn't have roofed
you mustn't have roofed
he mustn't have roofed
we mustn't have roofed
you mustn't have roofed
they mustn't have roofed	I mustn't have been roofing
you mustn't have been roofing
he mustn't have been roofing
we mustn't have been roofing
you mustn't have been roofing
they mustn't have been roofing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I roof?
must you roof?
must he roof?
must we roof?
must you roof?
must they roof? 	must I be roofing?
must you be roofing?
must he be roofing?
must we be roofing?
must you be roofing?
must they be roofing? 	must I have roofed?
must you have roofed?
must he have roofed?
must we have roofed?
must you have roofed?
must they have roofed? 	must I have been roofing?
must you have been roofing?
must he have been roofing?
must we have been roofing?
must you have been roofing?
must they have been roofing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I roof?
mustn't you roof?
mustn't he roof?
mustn't we roof?
mustn't you roof?
mustn't they roof? 	mustn't I be roofing?
mustn't you be roofing?
mustn't he be roofing?
mustn't we be roofing?
mustn't you be roofing?
mustn't they be roofing? 	mustn't I have roofed?
mustn't you have roofed?
mustn't he have roofed?
mustn't we have roofed?
mustn't you have roofed?
mustn't they have roofed? 	mustn't I have been roofing?
mustn't you have been roofing?
mustn't he have been roofing?
mustn't we have been roofing?
mustn't you have been roofing?
mustn't they have been roofing?