English verb conjugation
MUST IMPRISON

Regular verb: imprison - imprisoned - imprisoned

Affirmation

Simple form	V-ing form
I must imprison you must imprison he must imprison we must imprison you must imprison they must imprison	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	V-ing 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	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	V-ing 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	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	V-ing 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	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	V-ing form
must I imprison? must you imprison? must he imprison? must we imprison? must you imprison? must they imprison?	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	V-ing 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?	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	V-ing 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?	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	V-ing 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?	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?