I could choke you could choke he could choke we could choke you could choke they could choke
Forma con V-ing
I could be choking you could be choking he could be choking we could be choking you could be choking they could be choking
Perfecto
I could have choked you could have choked he could have choked we could have choked you could have choked they could have choked
Perfecto con V-ing
I could have been choking you could have been choking he could have been choking we could have been choking you could have been choking they could have been choking
Negación
Forma simple
I could not choke you could not choke he could not choke we could not choke you could not choke they could not choke
Forma con V-ing
I could not be choking you could not be choking he could not be choking we could not be choking you could not be choking they could not be choking
Perfecto
I could not have choked you could not have choked he could not have choked we could not have choked you could not have choked they could not have choked
Perfecto con V-ing
I could not have been choking you could not have been choking he could not have been choking we could not have been choking you could not have been choking they could not have been choking
Forma interrogativa
Forma simple
could I choke? could you choke? could he choke? could we choke? could you choke? could they choke?
Forma con V-ing
could I be choking? could you be choking? could he be choking? could we be choking? could you be choking? could they be choking?
Perfecto
could I have choked? could you have choked? could he have choked? could we have choked? could you have choked? could they have choked?
Perfecto con V-ing
could I have been choking? could you have been choking? could he have been choking? could we have been choking? could you have been choking? could they have been choking?
Forma interro-negativa
Forma simple
could I not choke? could you not choke? could he not choke? could we not choke? could you not choke? could they not choke?
Forma con V-ing
could I not be choking? could you not be choking? could he not be choking? could we not be choking? could you not be choking? could they not be choking?
Perfecto
could I not have choked? could you not have choked? could he not have choked? could we not have choked? could you not have choked? could they not have choked?
Perfecto con V-ing
could I not have been choking? could you not have been choking? could he not have been choking? could we not have been choking? could you not have been choking? could they not have been choking?