must xerox
Regular verb: xerox - xeroxed- xeroxed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must xerox
you must xerox
he must xerox
we must xerox
you must xerox
they must xerox 	I must be xeroxing
you must be xeroxing
he must be xeroxing
we must be xeroxing
you must be xeroxing
they must be xeroxing	I must have xeroxed
you must have xeroxed
he must have xeroxed
we must have xeroxed
you must have xeroxed
they must have xeroxed	I must have been xeroxing
you must have been xeroxing
he must have been xeroxing
we must have been xeroxing
you must have been xeroxing
they must have been xeroxing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't xerox
you mustn't xerox
he mustn't xerox
we mustn't xerox
you mustn't xerox
they mustn't xerox 	I mustn't be xeroxing
you mustn't be xeroxing
he mustn't be xeroxing
we mustn't be xeroxing
you mustn't be xeroxing
they mustn't be xeroxing	I mustn't have xeroxed
you mustn't have xeroxed
he mustn't have xeroxed
we mustn't have xeroxed
you mustn't have xeroxed
they mustn't have xeroxed	I mustn't have been xeroxing
you mustn't have been xeroxing
he mustn't have been xeroxing
we mustn't have been xeroxing
you mustn't have been xeroxing
they mustn't have been xeroxing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I xerox?
must you xerox?
must he xerox?
must we xerox?
must you xerox?
must they xerox? 	must I be xeroxing?
must you be xeroxing?
must he be xeroxing?
must we be xeroxing?
must you be xeroxing?
must they be xeroxing? 	must I have xeroxed?
must you have xeroxed?
must he have xeroxed?
must we have xeroxed?
must you have xeroxed?
must they have xeroxed? 	must I have been xeroxing?
must you have been xeroxing?
must he have been xeroxing?
must we have been xeroxing?
must you have been xeroxing?
must they have been xeroxing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I xerox?
mustn't you xerox?
mustn't he xerox?
mustn't we xerox?
mustn't you xerox?
mustn't they xerox? 	mustn't I be xeroxing?
mustn't you be xeroxing?
mustn't he be xeroxing?
mustn't we be xeroxing?
mustn't you be xeroxing?
mustn't they be xeroxing? 	mustn't I have xeroxed?
mustn't you have xeroxed?
mustn't he have xeroxed?
mustn't we have xeroxed?
mustn't you have xeroxed?
mustn't they have xeroxed? 	mustn't I have been xeroxing?
mustn't you have been xeroxing?
mustn't he have been xeroxing?
mustn't we have been xeroxing?
mustn't you have been xeroxing?
mustn't they have been xeroxing?