could voice
Verbo regular: voice - voiced- voiced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could voice
you could voice
he could voice
we could voice
you could voice
they could voice 	I could be voicing
you could be voicing
he could be voicing
we could be voicing
you could be voicing
they could be voicing	I could have voiced
you could have voiced
he could have voiced
we could have voiced
you could have voiced
they could have voiced	I could have been voicing
you could have been voicing
he could have been voicing
we could have been voicing
you could have been voicing
they could have been voicing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't voice
you couldn't voice
he couldn't voice
we couldn't voice
you couldn't voice
they couldn't voice 	I couldn't be voicing
you couldn't be voicing
he couldn't be voicing
we couldn't be voicing
you couldn't be voicing
they couldn't be voicing	I couldn't have voiced
you couldn't have voiced
he couldn't have voiced
we couldn't have voiced
you couldn't have voiced
they couldn't have voiced	I couldn't have been voicing
you couldn't have been voicing
he couldn't have been voicing
we couldn't have been voicing
you couldn't have been voicing
they couldn't have been voicing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I voice?
could you voice?
could he voice?
could we voice?
could you voice?
could they voice? 	could I be voicing?
could you be voicing?
could he be voicing?
could we be voicing?
could you be voicing?
could they be voicing? 	could I have voiced?
could you have voiced?
could he have voiced?
could we have voiced?
could you have voiced?
could they have voiced? 	could I have been voicing?
could you have been voicing?
could he have been voicing?
could we have been voicing?
could you have been voicing?
could they have been voicing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I voice?
couldn't you voice?
couldn't he voice?
couldn't we voice?
couldn't you voice?
couldn't they voice? 	couldn't I be voicing?
couldn't you be voicing?
couldn't he be voicing?
couldn't we be voicing?
couldn't you be voicing?
couldn't they be voicing? 	couldn't I have voiced?
couldn't you have voiced?
couldn't he have voiced?
couldn't we have voiced?
couldn't you have voiced?
couldn't they have voiced? 	couldn't I have been voicing?
couldn't you have been voicing?
couldn't he have been voicing?
couldn't we have been voicing?
couldn't you have been voicing?
couldn't they have been voicing?