I must bs you must bs he must bs we must bs you must bs they must bs
Forma con V-ing
I must be bsing you must be bsing he must be bsing we must be bsing you must be bsing they must be bsing
Perfecto
I must have bsed you must have bsed he must have bsed we must have bsed you must have bsed they must have bsed
Perfecto con V-ing
I must have been bsing you must have been bsing he must have been bsing we must have been bsing you must have been bsing they must have been bsing
Negación
Forma simple
I mustn't bs you mustn't bs he mustn't bs we mustn't bs you mustn't bs they mustn't bs
Forma con V-ing
I mustn't be bsing you mustn't be bsing he mustn't be bsing we mustn't be bsing you mustn't be bsing they mustn't be bsing
Perfecto
I mustn't have bsed you mustn't have bsed he mustn't have bsed we mustn't have bsed you mustn't have bsed they mustn't have bsed
Perfecto con V-ing
I mustn't have been bsing you mustn't have been bsing he mustn't have been bsing we mustn't have been bsing you mustn't have been bsing they mustn't have been bsing
Forma interrogativa
Forma simple
must I bs? must you bs? must he bs? must we bs? must you bs? must they bs?
Forma con V-ing
must I be bsing? must you be bsing? must he be bsing? must we be bsing? must you be bsing? must they be bsing?
Perfecto
must I have bsed? must you have bsed? must he have bsed? must we have bsed? must you have bsed? must they have bsed?
Perfecto con V-ing
must I have been bsing? must you have been bsing? must he have been bsing? must we have been bsing? must you have been bsing? must they have been bsing?
Forma interro-negativa
Forma simple
mustn't I bs? mustn't you bs? mustn't he bs? mustn't we bs? mustn't you bs? mustn't they bs?
Forma con V-ing
mustn't I be bsing? mustn't you be bsing? mustn't he be bsing? mustn't we be bsing? mustn't you be bsing? mustn't they be bsing?
Perfecto
mustn't I have bsed? mustn't you have bsed? mustn't he have bsed? mustn't we have bsed? mustn't you have bsed? mustn't they have bsed?
Perfecto con V-ing
mustn't I have been bsing? mustn't you have been bsing? mustn't he have been bsing? mustn't we have been bsing? mustn't you have been bsing? mustn't they have been bsing?