English verb conjugation
MUST ROISTER

Regular verb: roister - roistered - roistered

Affirmation

Simple form	V-ing form
I must roister you must roister he must roister we must roister you must roister they must roister	I must be roistering you must be roistering he must be roistering we must be roistering you must be roistering they must be roistering
Perfect	V-ing perfect
I must have roistered you must have roistered he must have roistered we must have roistered you must have roistered they must have roistered	I must have been roistering you must have been roistering he must have been roistering we must have been roistering you must have been roistering they must have been roistering

Negation

Simple form	V-ing form
I must not roister you must not roister he must not roister we must not roister you must not roister they must not roister	I must not be roistering you must not be roistering he must not be roistering we must not be roistering you must not be roistering they must not be roistering
Perfect	V-ing perfect
I must not have roistered you must not have roistered he must not have roistered we must not have roistered you must not have roistered they must not have roistered	I must not have been roistering you must not have been roistering he must not have been roistering we must not have been roistering you must not have been roistering they must not have been roistering

Interrogative form

Simple form	V-ing form
must I roister? must you roister? must he roister? must we roister? must you roister? must they roister?	must I be roistering? must you be roistering? must he be roistering? must we be roistering? must you be roistering? must they be roistering?
Perfect	V-ing perfect
must I have roistered? must you have roistered? must he have roistered? must we have roistered? must you have roistered? must they have roistered?	must I have been roistering? must you have been roistering? must he have been roistering? must we have been roistering? must you have been roistering? must they have been roistering?

Interro-negative form

Simple form	V-ing form
must I not roister? must you not roister? must he not roister? must we not roister? must you not roister? must they not roister?	must I not be roistering? must you not be roistering? must he not be roistering? must we not be roistering? must you not be roistering? must they not be roistering?
Perfect	V-ing perfect
must I not have roistered? must you not have roistered? must he not have roistered? must we not have roistered? must you not have roistered? must they not have roistered?	must I not have been roistering? must you not have been roistering? must he not have been roistering? must we not have been roistering? must you not have been roistering? must they not have been roistering?