I must calk you must calk he must calk we must calk you must calk they must calk
Forme en V-ing
I must be calking you must be calking he must be calking we must be calking you must be calking they must be calking
Perfect
I must have calked you must have calked he must have calked we must have calked you must have calked they must have calked
Perfect en V-ing
I must have been calking you must have been calking he must have been calking we must have been calking you must have been calking they must have been calking
Négation
Forme simple
I mustn't calk you mustn't calk he mustn't calk we mustn't calk you mustn't calk they mustn't calk
Forme en V-ing
I mustn't be calking you mustn't be calking he mustn't be calking we mustn't be calking you mustn't be calking they mustn't be calking
Perfect
I mustn't have calked you mustn't have calked he mustn't have calked we mustn't have calked you mustn't have calked they mustn't have calked
Perfect en V-ing
I mustn't have been calking you mustn't have been calking he mustn't have been calking we mustn't have been calking you mustn't have been calking they mustn't have been calking
Forme interrogative
Forme simple
must I calk? must you calk? must he calk? must we calk? must you calk? must they calk?
Forme en V-ing
must I be calking? must you be calking? must he be calking? must we be calking? must you be calking? must they be calking?
Perfect
must I have calked? must you have calked? must he have calked? must we have calked? must you have calked? must they have calked?
Perfect en V-ing
must I have been calking? must you have been calking? must he have been calking? must we have been calking? must you have been calking? must they have been calking?
Forme interro-négative
Forme simple
mustn't I calk? mustn't you calk? mustn't he calk? mustn't we calk? mustn't you calk? mustn't they calk?
Forme en V-ing
mustn't I be calking? mustn't you be calking? mustn't he be calking? mustn't we be calking? mustn't you be calking? mustn't they be calking?
Perfect
mustn't I have calked? mustn't you have calked? mustn't he have calked? mustn't we have calked? mustn't you have calked? mustn't they have calked?
Perfect en V-ing
mustn't I have been calking? mustn't you have been calking? mustn't he have been calking? mustn't we have been calking? mustn't you have been calking? mustn't they have been calking?