I could mat you could mat he could mat we could mat you could mat they could mat
Forma con V-ing
I could be matting you could be matting he could be matting we could be matting you could be matting they could be matting
Perfecto
I could have matted you could have matted he could have matted we could have matted you could have matted they could have matted
Perfecto con V-ing
I could have been matting you could have been matting he could have been matting we could have been matting you could have been matting they could have been matting
Negación
Forma simple
I could not mat you could not mat he could not mat we could not mat you could not mat they could not mat
Forma con V-ing
I could not be matting you could not be matting he could not be matting we could not be matting you could not be matting they could not be matting
Perfecto
I could not have matted you could not have matted he could not have matted we could not have matted you could not have matted they could not have matted
Perfecto con V-ing
I could not have been matting you could not have been matting he could not have been matting we could not have been matting you could not have been matting they could not have been matting
Forma interrogativa
Forma simple
could I mat? could you mat? could he mat? could we mat? could you mat? could they mat?
Forma con V-ing
could I be matting? could you be matting? could he be matting? could we be matting? could you be matting? could they be matting?
Perfecto
could I have matted? could you have matted? could he have matted? could we have matted? could you have matted? could they have matted?
Perfecto con V-ing
could I have been matting? could you have been matting? could he have been matting? could we have been matting? could you have been matting? could they have been matting?
Forma interro-negativa
Forma simple
could I not mat? could you not mat? could he not mat? could we not mat? could you not mat? could they not mat?
Forma con V-ing
could I not be matting? could you not be matting? could he not be matting? could we not be matting? could you not be matting? could they not be matting?
Perfecto
could I not have matted? could you not have matted? could he not have matted? could we not have matted? could you not have matted? could they not have matted?
Perfecto con V-ing
could I not have been matting? could you not have been matting? could he not have been matting? could we not have been matting? could you not have been matting? could they not have been matting?