English verb conjugation
MUST RETRACE

Regular verb: retrace - retraced - retraced

Affirmation

Simple form	V-ing form
I must retrace you must retrace he must retrace we must retrace you must retrace they must retrace	I must be retracing you must be retracing he must be retracing we must be retracing you must be retracing they must be retracing
Perfect	V-ing perfect
I must have retraced you must have retraced he must have retraced we must have retraced you must have retraced they must have retraced	I must have been retracing you must have been retracing he must have been retracing we must have been retracing you must have been retracing they must have been retracing

Negation

Simple form	V-ing form
I mustn't retrace you mustn't retrace he mustn't retrace we mustn't retrace you mustn't retrace they mustn't retrace	I mustn't be retracing you mustn't be retracing he mustn't be retracing we mustn't be retracing you mustn't be retracing they mustn't be retracing
Perfect	V-ing perfect
I mustn't have retraced you mustn't have retraced he mustn't have retraced we mustn't have retraced you mustn't have retraced they mustn't have retraced	I mustn't have been retracing you mustn't have been retracing he mustn't have been retracing we mustn't have been retracing you mustn't have been retracing they mustn't have been retracing

Interrogative form

Simple form	V-ing form
must I retrace? must you retrace? must he retrace? must we retrace? must you retrace? must they retrace?	must I be retracing? must you be retracing? must he be retracing? must we be retracing? must you be retracing? must they be retracing?
Perfect	V-ing perfect
must I have retraced? must you have retraced? must he have retraced? must we have retraced? must you have retraced? must they have retraced?	must I have been retracing? must you have been retracing? must he have been retracing? must we have been retracing? must you have been retracing? must they have been retracing?

Interro-negative form

Simple form	V-ing form
mustn't I retrace? mustn't you retrace? mustn't he retrace? mustn't we retrace? mustn't you retrace? mustn't they retrace?	mustn't I be retracing? mustn't you be retracing? mustn't he be retracing? mustn't we be retracing? mustn't you be retracing? mustn't they be retracing?
Perfect	V-ing perfect
mustn't I have retraced? mustn't you have retraced? mustn't he have retraced? mustn't we have retraced? mustn't you have retraced? mustn't they have retraced?	mustn't I have been retracing? mustn't you have been retracing? mustn't he have been retracing? mustn't we have been retracing? mustn't you have been retracing? mustn't they have been retracing?