I must brittle you must brittle she must brittle we must brittle you must brittle they must brittle
Forma con V-ing
I must be brittling you must be brittling she must be brittling we must be brittling you must be brittling they must be brittling
Perfecto
I must have brittled you must have brittled she must have brittled we must have brittled you must have brittled they must have brittled
Perfecto con V-ing
I must have been brittling you must have been brittling she must have been brittling we must have been brittling you must have been brittling they must have been brittling
Negación
Forma simple
I mustn't brittle you mustn't brittle she mustn't brittle we mustn't brittle you mustn't brittle they mustn't brittle
Forma con V-ing
I mustn't be brittling you mustn't be brittling she mustn't be brittling we mustn't be brittling you mustn't be brittling they mustn't be brittling
Perfecto
I mustn't have brittled you mustn't have brittled she mustn't have brittled we mustn't have brittled you mustn't have brittled they mustn't have brittled
Perfecto con V-ing
I mustn't have been brittling you mustn't have been brittling she mustn't have been brittling we mustn't have been brittling you mustn't have been brittling they mustn't have been brittling
Forma interrogativa
Forma simple
must I brittle? must you brittle? must she brittle? must we brittle? must you brittle? must they brittle?
Forma con V-ing
must I be brittling? must you be brittling? must she be brittling? must we be brittling? must you be brittling? must they be brittling?
Perfecto
must I have brittled? must you have brittled? must she have brittled? must we have brittled? must you have brittled? must they have brittled?
Perfecto con V-ing
must I have been brittling? must you have been brittling? must she have been brittling? must we have been brittling? must you have been brittling? must they have been brittling?
Forma interro-negativa
Forma simple
mustn't I brittle? mustn't you brittle? mustn't she brittle? mustn't we brittle? mustn't you brittle? mustn't they brittle?
Forma con V-ing
mustn't I be brittling? mustn't you be brittling? mustn't she be brittling? mustn't we be brittling? mustn't you be brittling? mustn't they be brittling?
Perfecto
mustn't I have brittled? mustn't you have brittled? mustn't she have brittled? mustn't we have brittled? mustn't you have brittled? mustn't they have brittled?
Perfecto con V-ing
mustn't I have been brittling? mustn't you have been brittling? mustn't she have been brittling? mustn't we have been brittling? mustn't you have been brittling? mustn't they have been brittling?