English verb conjugation
MUST LUSTER

Regular verb: luster - lustered - lustered

Affirmation

Simple form	V-ing form
I must luster you must luster he must luster we must luster you must luster they must luster	I must be lustering you must be lustering he must be lustering we must be lustering you must be lustering they must be lustering
Perfect	V-ing perfect
I must have lustered you must have lustered he must have lustered we must have lustered you must have lustered they must have lustered	I must have been lustering you must have been lustering he must have been lustering we must have been lustering you must have been lustering they must have been lustering

Negation

Simple form	V-ing form
I must not luster you must not luster he must not luster we must not luster you must not luster they must not luster	I must not be lustering you must not be lustering he must not be lustering we must not be lustering you must not be lustering they must not be lustering
Perfect	V-ing perfect
I must not have lustered you must not have lustered he must not have lustered we must not have lustered you must not have lustered they must not have lustered	I must not have been lustering you must not have been lustering he must not have been lustering we must not have been lustering you must not have been lustering they must not have been lustering

Interrogative form

Simple form	V-ing form
must I luster? must you luster? must he luster? must we luster? must you luster? must they luster?	must I be lustering? must you be lustering? must he be lustering? must we be lustering? must you be lustering? must they be lustering?
Perfect	V-ing perfect
must I have lustered? must you have lustered? must he have lustered? must we have lustered? must you have lustered? must they have lustered?	must I have been lustering? must you have been lustering? must he have been lustering? must we have been lustering? must you have been lustering? must they have been lustering?

Interro-negative form

Simple form	V-ing form
must I not luster? must you not luster? must he not luster? must we not luster? must you not luster? must they not luster?	must I not be lustering? must you not be lustering? must he not be lustering? must we not be lustering? must you not be lustering? must they not be lustering?
Perfect	V-ing perfect
must I not have lustered? must you not have lustered? must he not have lustered? must we not have lustered? must you not have lustered? must they not have lustered?	must I not have been lustering? must you not have been lustering? must he not have been lustering? must we not have been lustering? must you not have been lustering? must they not have been lustering?