I must submerge you must submerge she must submerge we must submerge you must submerge they must submerge
Forme en V-ing
I must be submerging you must be submerging she must be submerging we must be submerging you must be submerging they must be submerging
Perfect
I must have submerged you must have submerged she must have submerged we must have submerged you must have submerged they must have submerged
Perfect en V-ing
I must have been submerging you must have been submerging she must have been submerging we must have been submerging you must have been submerging they must have been submerging
Négation
Forme simple
I must not submerge you must not submerge she must not submerge we must not submerge you must not submerge they must not submerge
Forme en V-ing
I must not be submerging you must not be submerging she must not be submerging we must not be submerging you must not be submerging they must not be submerging
Perfect
I must not have submerged you must not have submerged she must not have submerged we must not have submerged you must not have submerged they must not have submerged
Perfect en V-ing
I must not have been submerging you must not have been submerging she must not have been submerging we must not have been submerging you must not have been submerging they must not have been submerging
Forme interrogative
Forme simple
must I submerge? must you submerge? must she submerge? must we submerge? must you submerge? must they submerge?
Forme en V-ing
must I be submerging? must you be submerging? must she be submerging? must we be submerging? must you be submerging? must they be submerging?
Perfect
must I have submerged? must you have submerged? must she have submerged? must we have submerged? must you have submerged? must they have submerged?
Perfect en V-ing
must I have been submerging? must you have been submerging? must she have been submerging? must we have been submerging? must you have been submerging? must they have been submerging?
Forme interro-négative
Forme simple
must I not submerge? must you not submerge? must she not submerge? must we not submerge? must you not submerge? must they not submerge?
Forme en V-ing
must I not be submerging? must you not be submerging? must she not be submerging? must we not be submerging? must you not be submerging? must they not be submerging?
Perfect
must I not have submerged? must you not have submerged? must she not have submerged? must we not have submerged? must you not have submerged? must they not have submerged?
Perfect en V-ing
must I not have been submerging? must you not have been submerging? must she not have been submerging? must we not have been submerging? must you not have been submerging? must they not have been submerging?