I could survive you could survive he could survive we could survive you could survive they could survive
Forma con V-ing
I could be surviving you could be surviving he could be surviving we could be surviving you could be surviving they could be surviving
Perfecto
I could have survived you could have survived he could have survived we could have survived you could have survived they could have survived
Perfecto con V-ing
I could have been surviving you could have been surviving he could have been surviving we could have been surviving you could have been surviving they could have been surviving
Negación
Forma simple
I could not survive you could not survive he could not survive we could not survive you could not survive they could not survive
Forma con V-ing
I could not be surviving you could not be surviving he could not be surviving we could not be surviving you could not be surviving they could not be surviving
Perfecto
I could not have survived you could not have survived he could not have survived we could not have survived you could not have survived they could not have survived
Perfecto con V-ing
I could not have been surviving you could not have been surviving he could not have been surviving we could not have been surviving you could not have been surviving they could not have been surviving
Forma interrogativa
Forma simple
could I survive? could you survive? could he survive? could we survive? could you survive? could they survive?
Forma con V-ing
could I be surviving? could you be surviving? could he be surviving? could we be surviving? could you be surviving? could they be surviving?
Perfecto
could I have survived? could you have survived? could he have survived? could we have survived? could you have survived? could they have survived?
Perfecto con V-ing
could I have been surviving? could you have been surviving? could he have been surviving? could we have been surviving? could you have been surviving? could they have been surviving?
Forma interro-negativa
Forma simple
could I not survive? could you not survive? could he not survive? could we not survive? could you not survive? could they not survive?
Forma con V-ing
could I not be surviving? could you not be surviving? could he not be surviving? could we not be surviving? could you not be surviving? could they not be surviving?
Perfecto
could I not have survived? could you not have survived? could he not have survived? could we not have survived? could you not have survived? could they not have survived?
Perfecto con V-ing
could I not have been surviving? could you not have been surviving? could he not have been surviving? could we not have been surviving? could you not have been surviving? could they not have been surviving?