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