I could port you could port he could port we could port you could port they could port
Forma con V-ing
I could be porting you could be porting he could be porting we could be porting you could be porting they could be porting
Perfecto
I could have ported you could have ported he could have ported we could have ported you could have ported they could have ported
Perfecto con V-ing
I could have been porting you could have been porting he could have been porting we could have been porting you could have been porting they could have been porting
Negación
Forma simple
I could not port you could not port he could not port we could not port you could not port they could not port
Forma con V-ing
I could not be porting you could not be porting he could not be porting we could not be porting you could not be porting they could not be porting
Perfecto
I could not have ported you could not have ported he could not have ported we could not have ported you could not have ported they could not have ported
Perfecto con V-ing
I could not have been porting you could not have been porting he could not have been porting we could not have been porting you could not have been porting they could not have been porting
Forma interrogativa
Forma simple
could I port? could you port? could he port? could we port? could you port? could they port?
Forma con V-ing
could I be porting? could you be porting? could he be porting? could we be porting? could you be porting? could they be porting?
Perfecto
could I have ported? could you have ported? could he have ported? could we have ported? could you have ported? could they have ported?
Perfecto con V-ing
could I have been porting? could you have been porting? could he have been porting? could we have been porting? could you have been porting? could they have been porting?
Forma interro-negativa
Forma simple
could I not port? could you not port? could he not port? could we not port? could you not port? could they not port?
Forma con V-ing
could I not be porting? could you not be porting? could he not be porting? could we not be porting? could you not be porting? could they not be porting?
Perfecto
could I not have ported? could you not have ported? could he not have ported? could we not have ported? could you not have ported? could they not have ported?
Perfecto con V-ing
could I not have been porting? could you not have been porting? could he not have been porting? could we not have been porting? could you not have been porting? could they not have been porting?