English verb conjugation
MUST MUSTER

Regular verb: muster - mustered - mustered

Affirmation

Simple form	V-ing form
I must muster you must muster he must muster we must muster you must muster they must muster	I must be mustering you must be mustering he must be mustering we must be mustering you must be mustering they must be mustering
Perfect	V-ing perfect
I must have mustered you must have mustered he must have mustered we must have mustered you must have mustered they must have mustered	I must have been mustering you must have been mustering he must have been mustering we must have been mustering you must have been mustering they must have been mustering

Negation

Simple form	V-ing form
I must not muster you must not muster he must not muster we must not muster you must not muster they must not muster	I must not be mustering you must not be mustering he must not be mustering we must not be mustering you must not be mustering they must not be mustering
Perfect	V-ing perfect
I must not have mustered you must not have mustered he must not have mustered we must not have mustered you must not have mustered they must not have mustered	I must not have been mustering you must not have been mustering he must not have been mustering we must not have been mustering you must not have been mustering they must not have been mustering

Interrogative form

Simple form	V-ing form
must I muster? must you muster? must he muster? must we muster? must you muster? must they muster?	must I be mustering? must you be mustering? must he be mustering? must we be mustering? must you be mustering? must they be mustering?
Perfect	V-ing perfect
must I have mustered? must you have mustered? must he have mustered? must we have mustered? must you have mustered? must they have mustered?	must I have been mustering? must you have been mustering? must he have been mustering? must we have been mustering? must you have been mustering? must they have been mustering?

Interro-negative form

Simple form	V-ing form
must I not muster? must you not muster? must he not muster? must we not muster? must you not muster? must they not muster?	must I not be mustering? must you not be mustering? must he not be mustering? must we not be mustering? must you not be mustering? must they not be mustering?
Perfect	V-ing perfect
must I not have mustered? must you not have mustered? must he not have mustered? must we not have mustered? must you not have mustered? must they not have mustered?	must I not have been mustering? must you not have been mustering? must he not have been mustering? must we not have been mustering? must you not have been mustering? must they not have been mustering?