could buffer
Verbo regular: buffer - buffered- buffered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could buffer
you could buffer
he could buffer
we could buffer
you could buffer
they could buffer 	I could be buffering
you could be buffering
he could be buffering
we could be buffering
you could be buffering
they could be buffering	I could have buffered
you could have buffered
he could have buffered
we could have buffered
you could have buffered
they could have buffered	I could have been buffering
you could have been buffering
he could have been buffering
we could have been buffering
you could have been buffering
they could have been buffering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not buffer
you could not buffer
he could not buffer
we could not buffer
you could not buffer
they could not buffer 	I could not be buffering
you could not be buffering
he could not be buffering
we could not be buffering
you could not be buffering
they could not be buffering	I could not have buffered
you could not have buffered
he could not have buffered
we could not have buffered
you could not have buffered
they could not have buffered	I could not have been buffering
you could not have been buffering
he could not have been buffering
we could not have been buffering
you could not have been buffering
they could not have been buffering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I buffer?
could you buffer?
could he buffer?
could we buffer?
could you buffer?
could they buffer? 	could I be buffering?
could you be buffering?
could he be buffering?
could we be buffering?
could you be buffering?
could they be buffering? 	could I have buffered?
could you have buffered?
could he have buffered?
could we have buffered?
could you have buffered?
could they have buffered? 	could I have been buffering?
could you have been buffering?
could he have been buffering?
could we have been buffering?
could you have been buffering?
could they have been buffering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not buffer?
could you not buffer?
could he not buffer?
could we not buffer?
could you not buffer?
could they not buffer? 	could I not be buffering?
could you not be buffering?
could he not be buffering?
could we not be buffering?
could you not be buffering?
could they not be buffering? 	could I not have buffered?
could you not have buffered?
could he not have buffered?
could we not have buffered?
could you not have buffered?
could they not have buffered? 	could I not have been buffering?
could you not have been buffering?
could he not have been buffering?
could we not have been buffering?
could you not have been buffering?
could they not have been buffering?