English verb conjugation
MUST XEROX

Regular verb: xerox - xeroxed - xeroxed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?