I must umber you must umber he must umber we must umber you must umber they must umber
Forme en V-ing
I must be umbering you must be umbering he must be umbering we must be umbering you must be umbering they must be umbering
Perfect
I must have umbered you must have umbered he must have umbered we must have umbered you must have umbered they must have umbered
Perfect en V-ing
I must have been umbering you must have been umbering he must have been umbering we must have been umbering you must have been umbering they must have been umbering
Négation
Forme simple
I must not umber you must not umber he must not umber we must not umber you must not umber they must not umber
Forme en V-ing
I must not be umbering you must not be umbering he must not be umbering we must not be umbering you must not be umbering they must not be umbering
Perfect
I must not have umbered you must not have umbered he must not have umbered we must not have umbered you must not have umbered they must not have umbered
Perfect en V-ing
I must not have been umbering you must not have been umbering he must not have been umbering we must not have been umbering you must not have been umbering they must not have been umbering
Forme interrogative
Forme simple
must I umber? must you umber? must he umber? must we umber? must you umber? must they umber?
Forme en V-ing
must I be umbering? must you be umbering? must he be umbering? must we be umbering? must you be umbering? must they be umbering?
Perfect
must I have umbered? must you have umbered? must he have umbered? must we have umbered? must you have umbered? must they have umbered?
Perfect en V-ing
must I have been umbering? must you have been umbering? must he have been umbering? must we have been umbering? must you have been umbering? must they have been umbering?
Forme interro-négative
Forme simple
must I not umber? must you not umber? must he not umber? must we not umber? must you not umber? must they not umber?
Forme en V-ing
must I not be umbering? must you not be umbering? must he not be umbering? must we not be umbering? must you not be umbering? must they not be umbering?
Perfect
must I not have umbered? must you not have umbered? must he not have umbered? must we not have umbered? must you not have umbered? must they not have umbered?
Perfect en V-ing
must I not have been umbering? must you not have been umbering? must he not have been umbering? must we not have been umbering? must you not have been umbering? must they not have been umbering?