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