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