I must devitalize you must devitalize he must devitalize we must devitalize you must devitalize they must devitalize
Forme en V-ing
I must be devitalizing you must be devitalizing he must be devitalizing we must be devitalizing you must be devitalizing they must be devitalizing
Perfect
I must have devitalized you must have devitalized he must have devitalized we must have devitalized you must have devitalized they must have devitalized
Perfect en V-ing
I must have been devitalizing you must have been devitalizing he must have been devitalizing we must have been devitalizing you must have been devitalizing they must have been devitalizing
Négation
Forme simple
I must not devitalize you must not devitalize he must not devitalize we must not devitalize you must not devitalize they must not devitalize
Forme en V-ing
I must not be devitalizing you must not be devitalizing he must not be devitalizing we must not be devitalizing you must not be devitalizing they must not be devitalizing
Perfect
I must not have devitalized you must not have devitalized he must not have devitalized we must not have devitalized you must not have devitalized they must not have devitalized
Perfect en V-ing
I must not have been devitalizing you must not have been devitalizing he must not have been devitalizing we must not have been devitalizing you must not have been devitalizing they must not have been devitalizing
Forme interrogative
Forme simple
must I devitalize? must you devitalize? must he devitalize? must we devitalize? must you devitalize? must they devitalize?
Forme en V-ing
must I be devitalizing? must you be devitalizing? must he be devitalizing? must we be devitalizing? must you be devitalizing? must they be devitalizing?
Perfect
must I have devitalized? must you have devitalized? must he have devitalized? must we have devitalized? must you have devitalized? must they have devitalized?
Perfect en V-ing
must I have been devitalizing? must you have been devitalizing? must he have been devitalizing? must we have been devitalizing? must you have been devitalizing? must they have been devitalizing?
Forme interro-négative
Forme simple
must I not devitalize? must you not devitalize? must he not devitalize? must we not devitalize? must you not devitalize? must they not devitalize?
Forme en V-ing
must I not be devitalizing? must you not be devitalizing? must he not be devitalizing? must we not be devitalizing? must you not be devitalizing? must they not be devitalizing?
Perfect
must I not have devitalized? must you not have devitalized? must he not have devitalized? must we not have devitalized? must you not have devitalized? must they not have devitalized?
Perfect en V-ing
must I not have been devitalizing? must you not have been devitalizing? must he not have been devitalizing? must we not have been devitalizing? must you not have been devitalizing? must they not have been devitalizing?