I must devitalise you must devitalise he must devitalise we must devitalise you must devitalise they must devitalise
Forme en V-ing
I must be devitalising you must be devitalising he must be devitalising we must be devitalising you must be devitalising they must be devitalising
Perfect
I must have devitalised you must have devitalised he must have devitalised we must have devitalised you must have devitalised they must have devitalised
Perfect en V-ing
I must have been devitalising you must have been devitalising he must have been devitalising we must have been devitalising you must have been devitalising they must have been devitalising
Négation
Forme simple
I must not devitalise you must not devitalise he must not devitalise we must not devitalise you must not devitalise they must not devitalise
Forme en V-ing
I must not be devitalising you must not be devitalising he must not be devitalising we must not be devitalising you must not be devitalising they must not be devitalising
Perfect
I must not have devitalised you must not have devitalised he must not have devitalised we must not have devitalised you must not have devitalised they must not have devitalised
Perfect en V-ing
I must not have been devitalising you must not have been devitalising he must not have been devitalising we must not have been devitalising you must not have been devitalising they must not have been devitalising
Forme interrogative
Forme simple
must I devitalise? must you devitalise? must he devitalise? must we devitalise? must you devitalise? must they devitalise?
Forme en V-ing
must I be devitalising? must you be devitalising? must he be devitalising? must we be devitalising? must you be devitalising? must they be devitalising?
Perfect
must I have devitalised? must you have devitalised? must he have devitalised? must we have devitalised? must you have devitalised? must they have devitalised?
Perfect en V-ing
must I have been devitalising? must you have been devitalising? must he have been devitalising? must we have been devitalising? must you have been devitalising? must they have been devitalising?
Forme interro-négative
Forme simple
must I not devitalise? must you not devitalise? must he not devitalise? must we not devitalise? must you not devitalise? must they not devitalise?
Forme en V-ing
must I not be devitalising? must you not be devitalising? must he not be devitalising? must we not be devitalising? must you not be devitalising? must they not be devitalising?
Perfect
must I not have devitalised? must you not have devitalised? must he not have devitalised? must we not have devitalised? must you not have devitalised? must they not have devitalised?
Perfect en V-ing
must I not have been devitalising? must you not have been devitalising? must he not have been devitalising? must we not have been devitalising? must you not have been devitalising? must they not have been devitalising?