I could taw you could taw he could taw we could taw you could taw they could taw
Forma con V-ing
I could be tawing you could be tawing he could be tawing we could be tawing you could be tawing they could be tawing
Perfecto
I could have tawed you could have tawed he could have tawed we could have tawed you could have tawed they could have tawed
Perfecto con V-ing
I could have been tawing you could have been tawing he could have been tawing we could have been tawing you could have been tawing they could have been tawing
Negación
Forma simple
I could not taw you could not taw he could not taw we could not taw you could not taw they could not taw
Forma con V-ing
I could not be tawing you could not be tawing he could not be tawing we could not be tawing you could not be tawing they could not be tawing
Perfecto
I could not have tawed you could not have tawed he could not have tawed we could not have tawed you could not have tawed they could not have tawed
Perfecto con V-ing
I could not have been tawing you could not have been tawing he could not have been tawing we could not have been tawing you could not have been tawing they could not have been tawing
Forma interrogativa
Forma simple
could I taw? could you taw? could he taw? could we taw? could you taw? could they taw?
Forma con V-ing
could I be tawing? could you be tawing? could he be tawing? could we be tawing? could you be tawing? could they be tawing?
Perfecto
could I have tawed? could you have tawed? could he have tawed? could we have tawed? could you have tawed? could they have tawed?
Perfecto con V-ing
could I have been tawing? could you have been tawing? could he have been tawing? could we have been tawing? could you have been tawing? could they have been tawing?
Forma interro-negativa
Forma simple
could I not taw? could you not taw? could he not taw? could we not taw? could you not taw? could they not taw?
Forma con V-ing
could I not be tawing? could you not be tawing? could he not be tawing? could we not be tawing? could you not be tawing? could they not be tawing?
Perfecto
could I not have tawed? could you not have tawed? could he not have tawed? could we not have tawed? could you not have tawed? could they not have tawed?
Perfecto con V-ing
could I not have been tawing? could you not have been tawing? could he not have been tawing? could we not have been tawing? could you not have been tawing? could they not have been tawing?