I could vocalize you could vocalize he could vocalize we could vocalize you could vocalize they could vocalize
Forma con V-ing
I could be vocalizing you could be vocalizing he could be vocalizing we could be vocalizing you could be vocalizing they could be vocalizing
Perfecto
I could have vocalized you could have vocalized he could have vocalized we could have vocalized you could have vocalized they could have vocalized
Perfecto con V-ing
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
I couldn't vocalize you couldn't vocalize he couldn't vocalize we couldn't vocalize you couldn't vocalize they couldn't vocalize
Forma con V-ing
I couldn't be vocalizing you couldn't be vocalizing he couldn't be vocalizing we couldn't be vocalizing you couldn't be vocalizing they couldn't be vocalizing
Perfecto
I couldn't have vocalized you couldn't have vocalized he couldn't have vocalized we couldn't have vocalized you couldn't have vocalized they couldn't have vocalized
Perfecto con V-ing
I couldn't have been vocalizing you couldn't have been vocalizing he couldn't have been vocalizing we couldn't have been vocalizing you couldn't have been vocalizing they couldn't have been vocalizing
Forma interrogativa
Forma simple
could I vocalize? could you vocalize? could he vocalize? could we vocalize? could you vocalize? could they vocalize?
Forma con V-ing
could I be vocalizing? could you be vocalizing? could he be vocalizing? could we be vocalizing? could you be vocalizing? could they be vocalizing?
Perfecto
could I have vocalized? could you have vocalized? could he have vocalized? could we have vocalized? could you have vocalized? could they have vocalized?
Perfecto con V-ing
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
couldn't I vocalize? couldn't you vocalize? couldn't he vocalize? couldn't we vocalize? couldn't you vocalize? couldn't they vocalize?
Forma con V-ing
couldn't I be vocalizing? couldn't you be vocalizing? couldn't he be vocalizing? couldn't we be vocalizing? couldn't you be vocalizing? couldn't they be vocalizing?
Perfecto
couldn't I have vocalized? couldn't you have vocalized? couldn't he have vocalized? couldn't we have vocalized? couldn't you have vocalized? couldn't they have vocalized?
Perfecto con V-ing
couldn't I have been vocalizing? couldn't you have been vocalizing? couldn't he have been vocalizing? couldn't we have been vocalizing? couldn't you have been vocalizing? couldn't they have been vocalizing?