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