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 must not xerox
you must not xerox
he must not xerox
we must not xerox
you must not xerox
they must not xerox 	I must not be xeroxing
you must not be xeroxing
he must not be xeroxing
we must not be xeroxing
you must not be xeroxing
they must not be xeroxing	I must not have xeroxed
you must not have xeroxed
he must not have xeroxed
we must not have xeroxed
you must not have xeroxed
they must not have xeroxed	I must not have been xeroxing
you must not have been xeroxing
he must not have been xeroxing
we must not have been xeroxing
you must not have been xeroxing
they must not 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 	
must I not xerox?
must you not xerox?
must he not xerox?
must we not xerox?
must you not xerox?
must they not xerox? 	must I not be xeroxing?
must you not be xeroxing?
must he not be xeroxing?
must we not be xeroxing?
must you not be xeroxing?
must they not be xeroxing? 	must I not have xeroxed?
must you not have xeroxed?
must he not have xeroxed?
must we not have xeroxed?
must you not have xeroxed?
must they not have xeroxed? 	must I not have been xeroxing?
must you not have been xeroxing?
must he not have been xeroxing?
must we not have been xeroxing?
must you not have been xeroxing?
must they not have been xeroxing?