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