I could retort you could retort he could retort we could retort you could retort they could retort
Forma con V-ing
I could be retorting you could be retorting he could be retorting we could be retorting you could be retorting they could be retorting
Perfecto
I could have retorted you could have retorted he could have retorted we could have retorted you could have retorted they could have retorted
Perfecto con V-ing
I could have been retorting you could have been retorting he could have been retorting we could have been retorting you could have been retorting they could have been retorting
Negación
Forma simple
I could not retort you could not retort he could not retort we could not retort you could not retort they could not retort
Forma con V-ing
I could not be retorting you could not be retorting he could not be retorting we could not be retorting you could not be retorting they could not be retorting
Perfecto
I could not have retorted you could not have retorted he could not have retorted we could not have retorted you could not have retorted they could not have retorted
Perfecto con V-ing
I could not have been retorting you could not have been retorting he could not have been retorting we could not have been retorting you could not have been retorting they could not have been retorting
Forma interrogativa
Forma simple
could I retort? could you retort? could he retort? could we retort? could you retort? could they retort?
Forma con V-ing
could I be retorting? could you be retorting? could he be retorting? could we be retorting? could you be retorting? could they be retorting?
Perfecto
could I have retorted? could you have retorted? could he have retorted? could we have retorted? could you have retorted? could they have retorted?
Perfecto con V-ing
could I have been retorting? could you have been retorting? could he have been retorting? could we have been retorting? could you have been retorting? could they have been retorting?
Forma interro-negativa
Forma simple
could I not retort? could you not retort? could he not retort? could we not retort? could you not retort? could they not retort?
Forma con V-ing
could I not be retorting? could you not be retorting? could he not be retorting? could we not be retorting? could you not be retorting? could they not be retorting?
Perfecto
could I not have retorted? could you not have retorted? could he not have retorted? could we not have retorted? could you not have retorted? could they not have retorted?
Perfecto con V-ing
could I not have been retorting? could you not have been retorting? could he not have been retorting? could we not have been retorting? could you not have been retorting? could they not have been retorting?