I could growl you could growl he could growl we could growl you could growl they could growl
Forma con V-ing
I could be growling you could be growling he could be growling we could be growling you could be growling they could be growling
Perfecto
I could have growled you could have growled he could have growled we could have growled you could have growled they could have growled
Perfecto con V-ing
I could have been growling you could have been growling he could have been growling we could have been growling you could have been growling they could have been growling
Negación
Forma simple
I could not growl you could not growl he could not growl we could not growl you could not growl they could not growl
Forma con V-ing
I could not be growling you could not be growling he could not be growling we could not be growling you could not be growling they could not be growling
Perfecto
I could not have growled you could not have growled he could not have growled we could not have growled you could not have growled they could not have growled
Perfecto con V-ing
I could not have been growling you could not have been growling he could not have been growling we could not have been growling you could not have been growling they could not have been growling
Forma interrogativa
Forma simple
could I growl? could you growl? could he growl? could we growl? could you growl? could they growl?
Forma con V-ing
could I be growling? could you be growling? could he be growling? could we be growling? could you be growling? could they be growling?
Perfecto
could I have growled? could you have growled? could he have growled? could we have growled? could you have growled? could they have growled?
Perfecto con V-ing
could I have been growling? could you have been growling? could he have been growling? could we have been growling? could you have been growling? could they have been growling?
Forma interro-negativa
Forma simple
could I not growl? could you not growl? could he not growl? could we not growl? could you not growl? could they not growl?
Forma con V-ing
could I not be growling? could you not be growling? could he not be growling? could we not be growling? could you not be growling? could they not be growling?
Perfecto
could I not have growled? could you not have growled? could he not have growled? could we not have growled? could you not have growled? could they not have growled?
Perfecto con V-ing
could I not have been growling? could you not have been growling? could he not have been growling? could we not have been growling? could you not have been growling? could they not have been growling?