I could balloon you could balloon he could balloon we could balloon you could balloon they could balloon
Forma con V-ing
I could be ballooning you could be ballooning he could be ballooning we could be ballooning you could be ballooning they could be ballooning
Perfecto
I could have ballooned you could have ballooned he could have ballooned we could have ballooned you could have ballooned they could have ballooned
Perfecto con V-ing
I could have been ballooning you could have been ballooning he could have been ballooning we could have been ballooning you could have been ballooning they could have been ballooning
Negación
Forma simple
I could not balloon you could not balloon he could not balloon we could not balloon you could not balloon they could not balloon
Forma con V-ing
I could not be ballooning you could not be ballooning he could not be ballooning we could not be ballooning you could not be ballooning they could not be ballooning
Perfecto
I could not have ballooned you could not have ballooned he could not have ballooned we could not have ballooned you could not have ballooned they could not have ballooned
Perfecto con V-ing
I could not have been ballooning you could not have been ballooning he could not have been ballooning we could not have been ballooning you could not have been ballooning they could not have been ballooning
Forma interrogativa
Forma simple
could I balloon? could you balloon? could he balloon? could we balloon? could you balloon? could they balloon?
Forma con V-ing
could I be ballooning? could you be ballooning? could he be ballooning? could we be ballooning? could you be ballooning? could they be ballooning?
Perfecto
could I have ballooned? could you have ballooned? could he have ballooned? could we have ballooned? could you have ballooned? could they have ballooned?
Perfecto con V-ing
could I have been ballooning? could you have been ballooning? could he have been ballooning? could we have been ballooning? could you have been ballooning? could they have been ballooning?
Forma interro-negativa
Forma simple
could I not balloon? could you not balloon? could he not balloon? could we not balloon? could you not balloon? could they not balloon?
Forma con V-ing
could I not be ballooning? could you not be ballooning? could he not be ballooning? could we not be ballooning? could you not be ballooning? could they not be ballooning?
Perfecto
could I not have ballooned? could you not have ballooned? could he not have ballooned? could we not have ballooned? could you not have ballooned? could they not have ballooned?
Perfecto con V-ing
could I not have been ballooning? could you not have been ballooning? could he not have been ballooning? could we not have been ballooning? could you not have been ballooning? could they not have been ballooning?