could revoke
Verbo regular: revoke - revoked- revoked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could revoke
you could revoke
he could revoke
we could revoke
you could revoke
they could revoke 	I could be revoking
you could be revoking
he could be revoking
we could be revoking
you could be revoking
they could be revoking	I could have revoked
you could have revoked
he could have revoked
we could have revoked
you could have revoked
they could have revoked	I could have been revoking
you could have been revoking
he could have been revoking
we could have been revoking
you could have been revoking
they could have been revoking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't revoke
you couldn't revoke
he couldn't revoke
we couldn't revoke
you couldn't revoke
they couldn't revoke 	I couldn't be revoking
you couldn't be revoking
he couldn't be revoking
we couldn't be revoking
you couldn't be revoking
they couldn't be revoking	I couldn't have revoked
you couldn't have revoked
he couldn't have revoked
we couldn't have revoked
you couldn't have revoked
they couldn't have revoked	I couldn't have been revoking
you couldn't have been revoking
he couldn't have been revoking
we couldn't have been revoking
you couldn't have been revoking
they couldn't have been revoking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I revoke?
could you revoke?
could he revoke?
could we revoke?
could you revoke?
could they revoke? 	could I be revoking?
could you be revoking?
could he be revoking?
could we be revoking?
could you be revoking?
could they be revoking? 	could I have revoked?
could you have revoked?
could he have revoked?
could we have revoked?
could you have revoked?
could they have revoked? 	could I have been revoking?
could you have been revoking?
could he have been revoking?
could we have been revoking?
could you have been revoking?
could they have been revoking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I revoke?
couldn't you revoke?
couldn't he revoke?
couldn't we revoke?
couldn't you revoke?
couldn't they revoke? 	couldn't I be revoking?
couldn't you be revoking?
couldn't he be revoking?
couldn't we be revoking?
couldn't you be revoking?
couldn't they be revoking? 	couldn't I have revoked?
couldn't you have revoked?
couldn't he have revoked?
couldn't we have revoked?
couldn't you have revoked?
couldn't they have revoked? 	couldn't I have been revoking?
couldn't you have been revoking?
couldn't he have been revoking?
couldn't we have been revoking?
couldn't you have been revoking?
couldn't they have been revoking?