English verb conjugation
MUST ACKNOWLEDGE

Regular verb: acknowledge - acknowledged - acknowledged

Affirmation

Simple form	V-ing form
I must acknowledge you must acknowledge he must acknowledge we must acknowledge you must acknowledge they must acknowledge	I must be acknowledging you must be acknowledging he must be acknowledging we must be acknowledging you must be acknowledging they must be acknowledging
Perfect	V-ing perfect
I must have acknowledged you must have acknowledged he must have acknowledged we must have acknowledged you must have acknowledged they must have acknowledged	I must have been acknowledging you must have been acknowledging he must have been acknowledging we must have been acknowledging you must have been acknowledging they must have been acknowledging

Negation

Simple form	V-ing form
I mustn't acknowledge you mustn't acknowledge he mustn't acknowledge we mustn't acknowledge you mustn't acknowledge they mustn't acknowledge	I mustn't be acknowledging you mustn't be acknowledging he mustn't be acknowledging we mustn't be acknowledging you mustn't be acknowledging they mustn't be acknowledging
Perfect	V-ing perfect
I mustn't have acknowledged you mustn't have acknowledged he mustn't have acknowledged we mustn't have acknowledged you mustn't have acknowledged they mustn't have acknowledged	I mustn't have been acknowledging you mustn't have been acknowledging he mustn't have been acknowledging we mustn't have been acknowledging you mustn't have been acknowledging they mustn't have been acknowledging

Interrogative form

Simple form	V-ing form
must I acknowledge? must you acknowledge? must he acknowledge? must we acknowledge? must you acknowledge? must they acknowledge?	must I be acknowledging? must you be acknowledging? must he be acknowledging? must we be acknowledging? must you be acknowledging? must they be acknowledging?
Perfect	V-ing perfect
must I have acknowledged? must you have acknowledged? must he have acknowledged? must we have acknowledged? must you have acknowledged? must they have acknowledged?	must I have been acknowledging? must you have been acknowledging? must he have been acknowledging? must we have been acknowledging? must you have been acknowledging? must they have been acknowledging?

Interro-negative form

Simple form	V-ing form
mustn't I acknowledge? mustn't you acknowledge? mustn't he acknowledge? mustn't we acknowledge? mustn't you acknowledge? mustn't they acknowledge?	mustn't I be acknowledging? mustn't you be acknowledging? mustn't he be acknowledging? mustn't we be acknowledging? mustn't you be acknowledging? mustn't they be acknowledging?
Perfect	V-ing perfect
mustn't I have acknowledged? mustn't you have acknowledged? mustn't he have acknowledged? mustn't we have acknowledged? mustn't you have acknowledged? mustn't they have acknowledged?	mustn't I have been acknowledging? mustn't you have been acknowledging? mustn't he have been acknowledging? mustn't we have been acknowledging? mustn't you have been acknowledging? mustn't they have been acknowledging?