I must submerse you must submerse she must submerse we must submerse you must submerse they must submerse
Forme en V-ing
I must be submersing you must be submersing she must be submersing we must be submersing you must be submersing they must be submersing
Perfect
I must have submersed you must have submersed she must have submersed we must have submersed you must have submersed they must have submersed
Perfect en V-ing
I must have been submersing you must have been submersing she must have been submersing we must have been submersing you must have been submersing they must have been submersing
Négation
Forme simple
I must not submerse you must not submerse she must not submerse we must not submerse you must not submerse they must not submerse
Forme en V-ing
I must not be submersing you must not be submersing she must not be submersing we must not be submersing you must not be submersing they must not be submersing
Perfect
I must not have submersed you must not have submersed she must not have submersed we must not have submersed you must not have submersed they must not have submersed
Perfect en V-ing
I must not have been submersing you must not have been submersing she must not have been submersing we must not have been submersing you must not have been submersing they must not have been submersing
Forme interrogative
Forme simple
must I submerse? must you submerse? must she submerse? must we submerse? must you submerse? must they submerse?
Forme en V-ing
must I be submersing? must you be submersing? must she be submersing? must we be submersing? must you be submersing? must they be submersing?
Perfect
must I have submersed? must you have submersed? must she have submersed? must we have submersed? must you have submersed? must they have submersed?
Perfect en V-ing
must I have been submersing? must you have been submersing? must she have been submersing? must we have been submersing? must you have been submersing? must they have been submersing?
Forme interro-négative
Forme simple
must I not submerse? must you not submerse? must she not submerse? must we not submerse? must you not submerse? must they not submerse?
Forme en V-ing
must I not be submersing? must you not be submersing? must she not be submersing? must we not be submersing? must you not be submersing? must they not be submersing?
Perfect
must I not have submersed? must you not have submersed? must she not have submersed? must we not have submersed? must you not have submersed? must they not have submersed?
Perfect en V-ing
must I not have been submersing? must you not have been submersing? must she not have been submersing? must we not have been submersing? must you not have been submersing? must they not have been submersing?