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