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