I could even you could even he could even we could even you could even they could even
Forma con V-ing
I could be evening you could be evening he could be evening we could be evening you could be evening they could be evening
Perfecto
I could have evened you could have evened he could have evened we could have evened you could have evened they could have evened
Perfecto con V-ing
I could have been evening you could have been evening he could have been evening we could have been evening you could have been evening they could have been evening
Negación
Forma simple
I could not even you could not even he could not even we could not even you could not even they could not even
Forma con V-ing
I could not be evening you could not be evening he could not be evening we could not be evening you could not be evening they could not be evening
Perfecto
I could not have evened you could not have evened he could not have evened we could not have evened you could not have evened they could not have evened
Perfecto con V-ing
I could not have been evening you could not have been evening he could not have been evening we could not have been evening you could not have been evening they could not have been evening
Forma interrogativa
Forma simple
could I even? could you even? could he even? could we even? could you even? could they even?
Forma con V-ing
could I be evening? could you be evening? could he be evening? could we be evening? could you be evening? could they be evening?
Perfecto
could I have evened? could you have evened? could he have evened? could we have evened? could you have evened? could they have evened?
Perfecto con V-ing
could I have been evening? could you have been evening? could he have been evening? could we have been evening? could you have been evening? could they have been evening?
Forma interro-negativa
Forma simple
could I not even? could you not even? could he not even? could we not even? could you not even? could they not even?
Forma con V-ing
could I not be evening? could you not be evening? could he not be evening? could we not be evening? could you not be evening? could they not be evening?
Perfecto
could I not have evened? could you not have evened? could he not have evened? could we not have evened? could you not have evened? could they not have evened?
Perfecto con V-ing
could I not have been evening? could you not have been evening? could he not have been evening? could we not have been evening? could you not have been evening? could they not have been evening?