I could toe you could toe he could toe we could toe you could toe they could toe
Forma con V-ing
I could be toing you could be toing he could be toing we could be toing you could be toing they could be toing
Perfecto
I could have toed you could have toed he 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 he 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 toe you could not toe he could not toe we could not toe you could not toe they could not toe
Forma con V-ing
I could not be toing you could not be toing he 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 he 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 he 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 toe? could you toe? could he toe? could we toe? could you toe? could they toe?
Forma con V-ing
could I be toing? could you be toing? could he be toing? could we be toing? could you be toing? could they be toing?
Perfecto
could I have toed? could you have toed? could he 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 he 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 toe? could you not toe? could he not toe? could we not toe? could you not toe? could they not toe?
Forma con V-ing
could I not be toing? could you not be toing? could he 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 he 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 he not have been toing? could we not have been toing? could you not have been toing? could they not have been toing?