English verb conjugation
MUST VANISH

Regular verb: vanish - vanished - vanished

Affirmation

Simple form	V-ing form
I must vanish you must vanish he must vanish we must vanish you must vanish they must vanish	I must be vanishing you must be vanishing he must be vanishing we must be vanishing you must be vanishing they must be vanishing
Perfect	V-ing perfect
I must have vanished you must have vanished he must have vanished we must have vanished you must have vanished they must have vanished	I must have been vanishing you must have been vanishing he must have been vanishing we must have been vanishing you must have been vanishing they must have been vanishing

Negation

Simple form	V-ing form
I must not vanish you must not vanish he must not vanish we must not vanish you must not vanish they must not vanish	I must not be vanishing you must not be vanishing he must not be vanishing we must not be vanishing you must not be vanishing they must not be vanishing
Perfect	V-ing perfect
I must not have vanished you must not have vanished he must not have vanished we must not have vanished you must not have vanished they must not have vanished	I must not have been vanishing you must not have been vanishing he must not have been vanishing we must not have been vanishing you must not have been vanishing they must not have been vanishing

Interrogative form

Simple form	V-ing form
must I vanish? must you vanish? must he vanish? must we vanish? must you vanish? must they vanish?	must I be vanishing? must you be vanishing? must he be vanishing? must we be vanishing? must you be vanishing? must they be vanishing?
Perfect	V-ing perfect
must I have vanished? must you have vanished? must he have vanished? must we have vanished? must you have vanished? must they have vanished?	must I have been vanishing? must you have been vanishing? must he have been vanishing? must we have been vanishing? must you have been vanishing? must they have been vanishing?

Interro-negative form

Simple form	V-ing form
must I not vanish? must you not vanish? must he not vanish? must we not vanish? must you not vanish? must they not vanish?	must I not be vanishing? must you not be vanishing? must he not be vanishing? must we not be vanishing? must you not be vanishing? must they not be vanishing?
Perfect	V-ing perfect
must I not have vanished? must you not have vanished? must he not have vanished? must we not have vanished? must you not have vanished? must they not have vanished?	must I not have been vanishing? must you not have been vanishing? must he not have been vanishing? must we not have been vanishing? must you not have been vanishing? must they not have been vanishing?