must vanish
Verbo regular: vanish - vanished- vanished

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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?