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