could pie
Verbo regular: pie - pied- pied

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could pie
you could pie
she could pie
we could pie
you could pie
they could pie 	I could be pying
you could be pying
she could be pying
we could be pying
you could be pying
they could be pying	I could have pied
you could have pied
she could have pied
we could have pied
you could have pied
they could have pied	I could have been pying
you could have been pying
she could have been pying
we could have been pying
you could have been pying
they could have been pying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not pie
you could not pie
she could not pie
we could not pie
you could not pie
they could not pie 	I could not be pying
you could not be pying
she could not be pying
we could not be pying
you could not be pying
they could not be pying	I could not have pied
you could not have pied
she could not have pied
we could not have pied
you could not have pied
they could not have pied	I could not have been pying
you could not have been pying
she could not have been pying
we could not have been pying
you could not have been pying
they could not have been pying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I pie?
could you pie?
could she pie?
could we pie?
could you pie?
could they pie? 	could I be pying?
could you be pying?
could she be pying?
could we be pying?
could you be pying?
could they be pying? 	could I have pied?
could you have pied?
could she have pied?
could we have pied?
could you have pied?
could they have pied? 	could I have been pying?
could you have been pying?
could she have been pying?
could we have been pying?
could you have been pying?
could they have been pying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not pie?
could you not pie?
could she not pie?
could we not pie?
could you not pie?
could they not pie? 	could I not be pying?
could you not be pying?
could she not be pying?
could we not be pying?
could you not be pying?
could they not be pying? 	could I not have pied?
could you not have pied?
could she not have pied?
could we not have pied?
could you not have pied?
could they not have pied? 	could I not have been pying?
could you not have been pying?
could she not have been pying?
could we not have been pying?
could you not have been pying?
could they not have been pying?