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