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