I must immerse you must immerse he must immerse we must immerse you must immerse they must immerse
V-ing form
I must be immersing you must be immersing he must be immersing we must be immersing you must be immersing they must be immersing
Perfect
I must have immersed you must have immersed he must have immersed we must have immersed you must have immersed they must have immersed
V-ing perfect
I must have been immersing you must have been immersing he must have been immersing we must have been immersing you must have been immersing they must have been immersing
Negation
Simple form
I must not immerse you must not immerse he must not immerse we must not immerse you must not immerse they must not immerse
V-ing form
I must not be immersing you must not be immersing he must not be immersing we must not be immersing you must not be immersing they must not be immersing
Perfect
I must not have immersed you must not have immersed he must not have immersed we must not have immersed you must not have immersed they must not have immersed
V-ing perfect
I must not have been immersing you must not have been immersing he must not have been immersing we must not have been immersing you must not have been immersing they must not have been immersing
Interrogative form
Simple form
must I immerse? must you immerse? must he immerse? must we immerse? must you immerse? must they immerse?
V-ing form
must I be immersing? must you be immersing? must he be immersing? must we be immersing? must you be immersing? must they be immersing?
Perfect
must I have immersed? must you have immersed? must he have immersed? must we have immersed? must you have immersed? must they have immersed?
V-ing perfect
must I have been immersing? must you have been immersing? must he have been immersing? must we have been immersing? must you have been immersing? must they have been immersing?
Interro-negative form
Simple form
must I not immerse? must you not immerse? must he not immerse? must we not immerse? must you not immerse? must they not immerse?
V-ing form
must I not be immersing? must you not be immersing? must he not be immersing? must we not be immersing? must you not be immersing? must they not be immersing?
Perfect
must I not have immersed? must you not have immersed? must he not have immersed? must we not have immersed? must you not have immersed? must they not have immersed?
V-ing perfect
must I not have been immersing? must you not have been immersing? must he not have been immersing? must we not have been immersing? must you not have been immersing? must they not have been immersing?