could growl
Verbo regular: growl - growled- growled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could growl
you could growl
she could growl
we could growl
you could growl
they could growl 	I could be growling
you could be growling
she could be growling
we could be growling
you could be growling
they could be growling	I could have growled
you could have growled
she could have growled
we could have growled
you could have growled
they could have growled	I could have been growling
you could have been growling
she could have been growling
we could have been growling
you could have been growling
they could have been growling	

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

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