English verb conjugation
MUST PASS

Regular verb: pass - passed - passed

Affirmation

Simple form	V-ing form
I must pass you must pass he must pass we must pass you must pass they must pass	I must be passing you must be passing he must be passing we must be passing you must be passing they must be passing
Perfect	V-ing perfect
I must have passed you must have passed he must have passed we must have passed you must have passed they must have passed	I must have been passing you must have been passing he must have been passing we must have been passing you must have been passing they must have been passing

Negation

Simple form	V-ing form
I must not pass you must not pass he must not pass we must not pass you must not pass they must not pass	I must not be passing you must not be passing he must not be passing we must not be passing you must not be passing they must not be passing
Perfect	V-ing perfect
I must not have passed you must not have passed he must not have passed we must not have passed you must not have passed they must not have passed	I must not have been passing you must not have been passing he must not have been passing we must not have been passing you must not have been passing they must not have been passing

Interrogative form

Simple form	V-ing form
must I pass? must you pass? must he pass? must we pass? must you pass? must they pass?	must I be passing? must you be passing? must he be passing? must we be passing? must you be passing? must they be passing?
Perfect	V-ing perfect
must I have passed? must you have passed? must he have passed? must we have passed? must you have passed? must they have passed?	must I have been passing? must you have been passing? must he have been passing? must we have been passing? must you have been passing? must they have been passing?

Interro-negative form

Simple form	V-ing form
must I not pass? must you not pass? must he not pass? must we not pass? must you not pass? must they not pass?	must I not be passing? must you not be passing? must he not be passing? must we not be passing? must you not be passing? must they not be passing?
Perfect	V-ing perfect
must I not have passed? must you not have passed? must he not have passed? must we not have passed? must you not have passed? must they not have passed?	must I not have been passing? must you not have been passing? must he not have been passing? must we not have been passing? must you not have been passing? must they not have been passing?