English verb conjugation
MUST HEAR

Irregular verb: hear - heard - heard

Affirmation

Simple form	V-ing form
I must hear you must hear he must hear we must hear you must hear they must hear	I must be hearing you must be hearing he must be hearing we must be hearing you must be hearing they must be hearing
Perfect	V-ing perfect
I must have heard you must have heard he must have heard we must have heard you must have heard they must have heard	I must have been hearing you must have been hearing he must have been hearing we must have been hearing you must have been hearing they must have been hearing

Negation

Simple form	V-ing form
I must not hear you must not hear he must not hear we must not hear you must not hear they must not hear	I must not be hearing you must not be hearing he must not be hearing we must not be hearing you must not be hearing they must not be hearing
Perfect	V-ing perfect
I must not have heard you must not have heard he must not have heard we must not have heard you must not have heard they must not have heard	I must not have been hearing you must not have been hearing he must not have been hearing we must not have been hearing you must not have been hearing they must not have been hearing

Interrogative form

Simple form	V-ing form
must I hear? must you hear? must he hear? must we hear? must you hear? must they hear?	must I be hearing? must you be hearing? must he be hearing? must we be hearing? must you be hearing? must they be hearing?
Perfect	V-ing perfect
must I have heard? must you have heard? must he have heard? must we have heard? must you have heard? must they have heard?	must I have been hearing? must you have been hearing? must he have been hearing? must we have been hearing? must you have been hearing? must they have been hearing?

Interro-negative form

Simple form	V-ing form
must I not hear? must you not hear? must he not hear? must we not hear? must you not hear? must they not hear?	must I not be hearing? must you not be hearing? must he not be hearing? must we not be hearing? must you not be hearing? must they not be hearing?
Perfect	V-ing perfect
must I not have heard? must you not have heard? must he not have heard? must we not have heard? must you not have heard? must they not have heard?	must I not have been hearing? must you not have been hearing? must he not have been hearing? must we not have been hearing? must you not have been hearing? must they not have been hearing?