I must festinate you must festinate he must festinate we must festinate you must festinate they must festinate
V-ing form
I must be festinating you must be festinating he must be festinating we must be festinating you must be festinating they must be festinating
Perfect
I must have festinated you must have festinated he must have festinated we must have festinated you must have festinated they must have festinated
V-ing perfect
I must have been festinating you must have been festinating he must have been festinating we must have been festinating you must have been festinating they must have been festinating
Negation
Simple form
I must not festinate you must not festinate he must not festinate we must not festinate you must not festinate they must not festinate
V-ing form
I must not be festinating you must not be festinating he must not be festinating we must not be festinating you must not be festinating they must not be festinating
Perfect
I must not have festinated you must not have festinated he must not have festinated we must not have festinated you must not have festinated they must not have festinated
V-ing perfect
I must not have been festinating you must not have been festinating he must not have been festinating we must not have been festinating you must not have been festinating they must not have been festinating
Interrogative form
Simple form
must I festinate? must you festinate? must he festinate? must we festinate? must you festinate? must they festinate?
V-ing form
must I be festinating? must you be festinating? must he be festinating? must we be festinating? must you be festinating? must they be festinating?
Perfect
must I have festinated? must you have festinated? must he have festinated? must we have festinated? must you have festinated? must they have festinated?
V-ing perfect
must I have been festinating? must you have been festinating? must he have been festinating? must we have been festinating? must you have been festinating? must they have been festinating?
Interro-negative form
Simple form
must I not festinate? must you not festinate? must he not festinate? must we not festinate? must you not festinate? must they not festinate?
V-ing form
must I not be festinating? must you not be festinating? must he not be festinating? must we not be festinating? must you not be festinating? must they not be festinating?
Perfect
must I not have festinated? must you not have festinated? must he not have festinated? must we not have festinated? must you not have festinated? must they not have festinated?
V-ing perfect
must I not have been festinating? must you not have been festinating? must he not have been festinating? must we not have been festinating? must you not have been festinating? must they not have been festinating?