could vocalize
Verbo regular: vocalize - vocalized- vocalized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could vocalize
you could vocalize
he could vocalize
we could vocalize
you could vocalize
they could vocalize 	I could be vocalizing
you could be vocalizing
he could be vocalizing
we could be vocalizing
you could be vocalizing
they could be vocalizing	I could have vocalized
you could have vocalized
he could have vocalized
we could have vocalized
you could have vocalized
they could have vocalized	I could have been vocalizing
you could have been vocalizing
he could have been vocalizing
we could have been vocalizing
you could have been vocalizing
they could have been vocalizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not vocalize
you could not vocalize
he could not vocalize
we could not vocalize
you could not vocalize
they could not vocalize 	I could not be vocalizing
you could not be vocalizing
he could not be vocalizing
we could not be vocalizing
you could not be vocalizing
they could not be vocalizing	I could not have vocalized
you could not have vocalized
he could not have vocalized
we could not have vocalized
you could not have vocalized
they could not have vocalized	I could not have been vocalizing
you could not have been vocalizing
he could not have been vocalizing
we could not have been vocalizing
you could not have been vocalizing
they could not have been vocalizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I vocalize?
could you vocalize?
could he vocalize?
could we vocalize?
could you vocalize?
could they vocalize? 	could I be vocalizing?
could you be vocalizing?
could he be vocalizing?
could we be vocalizing?
could you be vocalizing?
could they be vocalizing? 	could I have vocalized?
could you have vocalized?
could he have vocalized?
could we have vocalized?
could you have vocalized?
could they have vocalized? 	could I have been vocalizing?
could you have been vocalizing?
could he have been vocalizing?
could we have been vocalizing?
could you have been vocalizing?
could they have been vocalizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not vocalize?
could you not vocalize?
could he not vocalize?
could we not vocalize?
could you not vocalize?
could they not vocalize? 	could I not be vocalizing?
could you not be vocalizing?
could he not be vocalizing?
could we not be vocalizing?
could you not be vocalizing?
could they not be vocalizing? 	could I not have vocalized?
could you not have vocalized?
could he not have vocalized?
could we not have vocalized?
could you not have vocalized?
could they not have vocalized? 	could I not have been vocalizing?
could you not have been vocalizing?
could he not have been vocalizing?
could we not have been vocalizing?
could you not have been vocalizing?
could they not have been vocalizing?