English verb conjugation
MUST PREACKNOWLEDGE

Regular verb: preacknowledge - preacknowledged - preacknowledged

Affirmation

Simple form	V-ing form
I must preacknowledge you must preacknowledge he must preacknowledge we must preacknowledge you must preacknowledge they must preacknowledge	I must be preacknowledging you must be preacknowledging he must be preacknowledging we must be preacknowledging you must be preacknowledging they must be preacknowledging
Perfect	V-ing perfect
I must have preacknowledged you must have preacknowledged he must have preacknowledged we must have preacknowledged you must have preacknowledged they must have preacknowledged	I must have been preacknowledging you must have been preacknowledging he must have been preacknowledging we must have been preacknowledging you must have been preacknowledging they must have been preacknowledging

Negation

Simple form	V-ing form
I must not preacknowledge you must not preacknowledge he must not preacknowledge we must not preacknowledge you must not preacknowledge they must not preacknowledge	I must not be preacknowledging you must not be preacknowledging he must not be preacknowledging we must not be preacknowledging you must not be preacknowledging they must not be preacknowledging
Perfect	V-ing perfect
I must not have preacknowledged you must not have preacknowledged he must not have preacknowledged we must not have preacknowledged you must not have preacknowledged they must not have preacknowledged	I must not have been preacknowledging you must not have been preacknowledging he must not have been preacknowledging we must not have been preacknowledging you must not have been preacknowledging they must not have been preacknowledging

Interrogative form

Simple form	V-ing form
must I preacknowledge? must you preacknowledge? must he preacknowledge? must we preacknowledge? must you preacknowledge? must they preacknowledge?	must I be preacknowledging? must you be preacknowledging? must he be preacknowledging? must we be preacknowledging? must you be preacknowledging? must they be preacknowledging?
Perfect	V-ing perfect
must I have preacknowledged? must you have preacknowledged? must he have preacknowledged? must we have preacknowledged? must you have preacknowledged? must they have preacknowledged?	must I have been preacknowledging? must you have been preacknowledging? must he have been preacknowledging? must we have been preacknowledging? must you have been preacknowledging? must they have been preacknowledging?

Interro-negative form

Simple form	V-ing form
must I not preacknowledge? must you not preacknowledge? must he not preacknowledge? must we not preacknowledge? must you not preacknowledge? must they not preacknowledge?	must I not be preacknowledging? must you not be preacknowledging? must he not be preacknowledging? must we not be preacknowledging? must you not be preacknowledging? must they not be preacknowledging?
Perfect	V-ing perfect
must I not have preacknowledged? must you not have preacknowledged? must he not have preacknowledged? must we not have preacknowledged? must you not have preacknowledged? must they not have preacknowledged?	must I not have been preacknowledging? must you not have been preacknowledging? must he not have been preacknowledging? must we not have been preacknowledging? must you not have been preacknowledging? must they not have been preacknowledging?