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