I must devise you must devise he must devise we must devise you must devise they must devise
Forme en V-ing
I must be devising you must be devising he must be devising we must be devising you must be devising they must be devising
Perfect
I must have devised you must have devised he must have devised we must have devised you must have devised they must have devised
Perfect en V-ing
I must have been devising you must have been devising he must have been devising we must have been devising you must have been devising they must have been devising
Négation
Forme simple
I mustn't devise you mustn't devise he mustn't devise we mustn't devise you mustn't devise they mustn't devise
Forme en V-ing
I mustn't be devising you mustn't be devising he mustn't be devising we mustn't be devising you mustn't be devising they mustn't be devising
Perfect
I mustn't have devised you mustn't have devised he mustn't have devised we mustn't have devised you mustn't have devised they mustn't have devised
Perfect en V-ing
I mustn't have been devising you mustn't have been devising he mustn't have been devising we mustn't have been devising you mustn't have been devising they mustn't have been devising
Forme interrogative
Forme simple
must I devise? must you devise? must he devise? must we devise? must you devise? must they devise?
Forme en V-ing
must I be devising? must you be devising? must he be devising? must we be devising? must you be devising? must they be devising?
Perfect
must I have devised? must you have devised? must he have devised? must we have devised? must you have devised? must they have devised?
Perfect en V-ing
must I have been devising? must you have been devising? must he have been devising? must we have been devising? must you have been devising? must they have been devising?
Forme interro-négative
Forme simple
mustn't I devise? mustn't you devise? mustn't he devise? mustn't we devise? mustn't you devise? mustn't they devise?
Forme en V-ing
mustn't I be devising? mustn't you be devising? mustn't he be devising? mustn't we be devising? mustn't you be devising? mustn't they be devising?
Perfect
mustn't I have devised? mustn't you have devised? mustn't he have devised? mustn't we have devised? mustn't you have devised? mustn't they have devised?
Perfect en V-ing
mustn't I have been devising? mustn't you have been devising? mustn't he have been devising? mustn't we have been devising? mustn't you have been devising? mustn't they have been devising?