I must imprison you must imprison he must imprison we must imprison you must imprison they must imprison
V-ing form
I must be imprisoning you must be imprisoning he must be imprisoning we must be imprisoning you must be imprisoning they must be imprisoning
Perfect
I must have imprisoned you must have imprisoned he must have imprisoned we must have imprisoned you must have imprisoned they must have imprisoned
V-ing perfect
I must have been imprisoning you must have been imprisoning he must have been imprisoning we must have been imprisoning you must have been imprisoning they must have been imprisoning
Negation
Simple form
I mustn't imprison you mustn't imprison he mustn't imprison we mustn't imprison you mustn't imprison they mustn't imprison
V-ing form
I mustn't be imprisoning you mustn't be imprisoning he mustn't be imprisoning we mustn't be imprisoning you mustn't be imprisoning they mustn't be imprisoning
Perfect
I mustn't have imprisoned you mustn't have imprisoned he mustn't have imprisoned we mustn't have imprisoned you mustn't have imprisoned they mustn't have imprisoned
V-ing perfect
I mustn't have been imprisoning you mustn't have been imprisoning he mustn't have been imprisoning we mustn't have been imprisoning you mustn't have been imprisoning they mustn't have been imprisoning
Interrogative form
Simple form
must I imprison? must you imprison? must he imprison? must we imprison? must you imprison? must they imprison?
V-ing form
must I be imprisoning? must you be imprisoning? must he be imprisoning? must we be imprisoning? must you be imprisoning? must they be imprisoning?
Perfect
must I have imprisoned? must you have imprisoned? must he have imprisoned? must we have imprisoned? must you have imprisoned? must they have imprisoned?
V-ing perfect
must I have been imprisoning? must you have been imprisoning? must he have been imprisoning? must we have been imprisoning? must you have been imprisoning? must they have been imprisoning?
Interro-negative form
Simple form
mustn't I imprison? mustn't you imprison? mustn't he imprison? mustn't we imprison? mustn't you imprison? mustn't they imprison?
V-ing form
mustn't I be imprisoning? mustn't you be imprisoning? mustn't he be imprisoning? mustn't we be imprisoning? mustn't you be imprisoning? mustn't they be imprisoning?
Perfect
mustn't I have imprisoned? mustn't you have imprisoned? mustn't he have imprisoned? mustn't we have imprisoned? mustn't you have imprisoned? mustn't they have imprisoned?
V-ing perfect
mustn't I have been imprisoning? mustn't you have been imprisoning? mustn't he have been imprisoning? mustn't we have been imprisoning? mustn't you have been imprisoning? mustn't they have been imprisoning?