could crow
Verbo regular: crow - crowed- crowed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could crow
you could crow
he could crow
we could crow
you could crow
they could crow 	I could be crowing
you could be crowing
he could be crowing
we could be crowing
you could be crowing
they could be crowing	I could have crowed
you could have crowed
he could have crowed
we could have crowed
you could have crowed
they could have crowed	I could have been crowing
you could have been crowing
he could have been crowing
we could have been crowing
you could have been crowing
they could have been crowing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not crow
you could not crow
he could not crow
we could not crow
you could not crow
they could not crow 	I could not be crowing
you could not be crowing
he could not be crowing
we could not be crowing
you could not be crowing
they could not be crowing	I could not have crowed
you could not have crowed
he could not have crowed
we could not have crowed
you could not have crowed
they could not have crowed	I could not have been crowing
you could not have been crowing
he could not have been crowing
we could not have been crowing
you could not have been crowing
they could not have been crowing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I crow?
could you crow?
could he crow?
could we crow?
could you crow?
could they crow? 	could I be crowing?
could you be crowing?
could he be crowing?
could we be crowing?
could you be crowing?
could they be crowing? 	could I have crowed?
could you have crowed?
could he have crowed?
could we have crowed?
could you have crowed?
could they have crowed? 	could I have been crowing?
could you have been crowing?
could he have been crowing?
could we have been crowing?
could you have been crowing?
could they have been crowing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not crow?
could you not crow?
could he not crow?
could we not crow?
could you not crow?
could they not crow? 	could I not be crowing?
could you not be crowing?
could he not be crowing?
could we not be crowing?
could you not be crowing?
could they not be crowing? 	could I not have crowed?
could you not have crowed?
could he not have crowed?
could we not have crowed?
could you not have crowed?
could they not have crowed? 	could I not have been crowing?
could you not have been crowing?
could he not have been crowing?
could we not have been crowing?
could you not have been crowing?
could they not have been crowing?