I must immerse you must immerse she must immerse we must immerse you must immerse they must immerse
V-ing form
I must be immersing you must be immersing she must be immersing we must be immersing you must be immersing they must be immersing
Perfect
I must have immersed you must have immersed she 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 she 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 she 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 she 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 she 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 she 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 she immerse? must we immerse? must you immerse? must they immerse?
V-ing form
must I be immersing? must you be immersing? must she be immersing? must we be immersing? must you be immersing? must they be immersing?
Perfect
must I have immersed? must you have immersed? must she 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 she 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 she 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 she 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 she 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 she not have been immersing? must we not have been immersing? must you not have been immersing? must they not have been immersing?