I could bit you could bit he could bit we could bit you could bit they could bit
Forma con V-ing
I could be biting you could be biting he could be biting we could be biting you could be biting they could be biting
Perfecto
I could have bited you could have bited he could have bited we could have bited you could have bited they could have bited
Perfecto con V-ing
I could have been biting you could have been biting he could have been biting we could have been biting you could have been biting they could have been biting
Negación
Forma simple
I could not bit you could not bit he could not bit we could not bit you could not bit they could not bit
Forma con V-ing
I could not be biting you could not be biting he could not be biting we could not be biting you could not be biting they could not be biting
Perfecto
I could not have bited you could not have bited he could not have bited we could not have bited you could not have bited they could not have bited
Perfecto con V-ing
I could not have been biting you could not have been biting he could not have been biting we could not have been biting you could not have been biting they could not have been biting
Forma interrogativa
Forma simple
could I bit? could you bit? could he bit? could we bit? could you bit? could they bit?
Forma con V-ing
could I be biting? could you be biting? could he be biting? could we be biting? could you be biting? could they be biting?
Perfecto
could I have bited? could you have bited? could he have bited? could we have bited? could you have bited? could they have bited?
Perfecto con V-ing
could I have been biting? could you have been biting? could he have been biting? could we have been biting? could you have been biting? could they have been biting?
Forma interro-negativa
Forma simple
could I not bit? could you not bit? could he not bit? could we not bit? could you not bit? could they not bit?
Forma con V-ing
could I not be biting? could you not be biting? could he not be biting? could we not be biting? could you not be biting? could they not be biting?
Perfecto
could I not have bited? could you not have bited? could he not have bited? could we not have bited? could you not have bited? could they not have bited?
Perfecto con V-ing
could I not have been biting? could you not have been biting? could he not have been biting? could we not have been biting? could you not have been biting? could they not have been biting?