could vanish
Verbo regular: vanish - vanished- vanished

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could vanish
you could vanish
he could vanish
we could vanish
you could vanish
they could vanish 	I could be vanishing
you could be vanishing
he could be vanishing
we could be vanishing
you could be vanishing
they could be vanishing	I could have vanished
you could have vanished
he could have vanished
we could have vanished
you could have vanished
they could have vanished	I could have been vanishing
you could have been vanishing
he could have been vanishing
we could have been vanishing
you could have been vanishing
they could have been vanishing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not vanish
you could not vanish
he could not vanish
we could not vanish
you could not vanish
they could not vanish 	I could not be vanishing
you could not be vanishing
he could not be vanishing
we could not be vanishing
you could not be vanishing
they could not be vanishing	I could not have vanished
you could not have vanished
he could not have vanished
we could not have vanished
you could not have vanished
they could not have vanished	I could not have been vanishing
you could not have been vanishing
he could not have been vanishing
we could not have been vanishing
you could not have been vanishing
they could not have been vanishing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I vanish?
could you vanish?
could he vanish?
could we vanish?
could you vanish?
could they vanish? 	could I be vanishing?
could you be vanishing?
could he be vanishing?
could we be vanishing?
could you be vanishing?
could they be vanishing? 	could I have vanished?
could you have vanished?
could he have vanished?
could we have vanished?
could you have vanished?
could they have vanished? 	could I have been vanishing?
could you have been vanishing?
could he have been vanishing?
could we have been vanishing?
could you have been vanishing?
could they have been vanishing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not vanish?
could you not vanish?
could he not vanish?
could we not vanish?
could you not vanish?
could they not vanish? 	could I not be vanishing?
could you not be vanishing?
could he not be vanishing?
could we not be vanishing?
could you not be vanishing?
could they not be vanishing? 	could I not have vanished?
could you not have vanished?
could he not have vanished?
could we not have vanished?
could you not have vanished?
could they not have vanished? 	could I not have been vanishing?
could you not have been vanishing?
could he not have been vanishing?
could we not have been vanishing?
could you not have been vanishing?
could they not have been vanishing?