English verb conjugation
MUST INFORM

Regular verb: inform - informed - informed

Affirmation

Simple form	V-ing form
I must inform you must inform he must inform we must inform you must inform they must inform	I must be informing you must be informing he must be informing we must be informing you must be informing they must be informing
Perfect	V-ing perfect
I must have informed you must have informed he must have informed we must have informed you must have informed they must have informed	I must have been informing you must have been informing he must have been informing we must have been informing you must have been informing they must have been informing

Negation

Simple form	V-ing form
I must not inform you must not inform he must not inform we must not inform you must not inform they must not inform	I must not be informing you must not be informing he must not be informing we must not be informing you must not be informing they must not be informing
Perfect	V-ing perfect
I must not have informed you must not have informed he must not have informed we must not have informed you must not have informed they must not have informed	I must not have been informing you must not have been informing he must not have been informing we must not have been informing you must not have been informing they must not have been informing

Interrogative form

Simple form	V-ing form
must I inform? must you inform? must he inform? must we inform? must you inform? must they inform?	must I be informing? must you be informing? must he be informing? must we be informing? must you be informing? must they be informing?
Perfect	V-ing perfect
must I have informed? must you have informed? must he have informed? must we have informed? must you have informed? must they have informed?	must I have been informing? must you have been informing? must he have been informing? must we have been informing? must you have been informing? must they have been informing?

Interro-negative form

Simple form	V-ing form
must I not inform? must you not inform? must he not inform? must we not inform? must you not inform? must they not inform?	must I not be informing? must you not be informing? must he not be informing? must we not be informing? must you not be informing? must they not be informing?
Perfect	V-ing perfect
must I not have informed? must you not have informed? must he not have informed? must we not have informed? must you not have informed? must they not have informed?	must I not have been informing? must you not have been informing? must he not have been informing? must we not have been informing? must you not have been informing? must they not have been informing?