I must pose you must pose he must pose we must pose you must pose they must pose
V-ing form
I must be posing you must be posing he must be posing we must be posing you must be posing they must be posing
Perfect
I must have posed you must have posed he must have posed we must have posed you must have posed they must have posed
V-ing perfect
I must have been posing you must have been posing he must have been posing we must have been posing you must have been posing they must have been posing
Negation
Simple form
I must not pose you must not pose he must not pose we must not pose you must not pose they must not pose
V-ing form
I must not be posing you must not be posing he must not be posing we must not be posing you must not be posing they must not be posing
Perfect
I must not have posed you must not have posed he must not have posed we must not have posed you must not have posed they must not have posed
V-ing perfect
I must not have been posing you must not have been posing he must not have been posing we must not have been posing you must not have been posing they must not have been posing
Interrogative form
Simple form
must I pose? must you pose? must he pose? must we pose? must you pose? must they pose?
V-ing form
must I be posing? must you be posing? must he be posing? must we be posing? must you be posing? must they be posing?
Perfect
must I have posed? must you have posed? must he have posed? must we have posed? must you have posed? must they have posed?
V-ing perfect
must I have been posing? must you have been posing? must he have been posing? must we have been posing? must you have been posing? must they have been posing?
Interro-negative form
Simple form
must I not pose? must you not pose? must he not pose? must we not pose? must you not pose? must they not pose?
V-ing form
must I not be posing? must you not be posing? must he not be posing? must we not be posing? must you not be posing? must they not be posing?
Perfect
must I not have posed? must you not have posed? must he not have posed? must we not have posed? must you not have posed? must they not have posed?
V-ing perfect
must I not have been posing? must you not have been posing? must he not have been posing? must we not have been posing? must you not have been posing? must they not have been posing?