Atención, este verbo puede no existir, se da como ejemplo la conjugación.
Afirmación
Forma simple
I could to you could to she could to we could to you could to they could to
Forma con V-ing
I could be toing you could be toing she could be toing we could be toing you could be toing they could be toing
Perfecto
I could have toed you could have toed she could have toed we could have toed you could have toed they could have toed
Perfecto con V-ing
I could have been toing you could have been toing she could have been toing we could have been toing you could have been toing they could have been toing
Negación
Forma simple
I could not to you could not to she could not to we could not to you could not to they could not to
Forma con V-ing
I could not be toing you could not be toing she could not be toing we could not be toing you could not be toing they could not be toing
Perfecto
I could not have toed you could not have toed she could not have toed we could not have toed you could not have toed they could not have toed
Perfecto con V-ing
I could not have been toing you could not have been toing she could not have been toing we could not have been toing you could not have been toing they could not have been toing
Forma interrogativa
Forma simple
could I to? could you to? could she to? could we to? could you to? could they to?
Forma con V-ing
could I be toing? could you be toing? could she be toing? could we be toing? could you be toing? could they be toing?
Perfecto
could I have toed? could you have toed? could she have toed? could we have toed? could you have toed? could they have toed?
Perfecto con V-ing
could I have been toing? could you have been toing? could she have been toing? could we have been toing? could you have been toing? could they have been toing?
Forma interro-negativa
Forma simple
could I not to? could you not to? could she not to? could we not to? could you not to? could they not to?
Forma con V-ing
could I not be toing? could you not be toing? could she not be toing? could we not be toing? could you not be toing? could they not be toing?
Perfecto
could I not have toed? could you not have toed? could she not have toed? could we not have toed? could you not have toed? could they not have toed?
Perfecto con V-ing
could I not have been toing? could you not have been toing? could she not have been toing? could we not have been toing? could you not have been toing? could they not have been toing?