I could ginger you could ginger he could ginger we could ginger you could ginger they could ginger
V-ing form
I could be gingering you could be gingering he could be gingering we could be gingering you could be gingering they could be gingering
Perfect
I could have gingered you could have gingered he could have gingered we could have gingered you could have gingered they could have gingered
V-ing perfect
I could have been gingering you could have been gingering he could have been gingering we could have been gingering you could have been gingering they could have been gingering
Negation
Simple form
I could not ginger you could not ginger he could not ginger we could not ginger you could not ginger they could not ginger
V-ing form
I could not be gingering you could not be gingering he could not be gingering we could not be gingering you could not be gingering they could not be gingering
Perfect
I could not have gingered you could not have gingered he could not have gingered we could not have gingered you could not have gingered they could not have gingered
V-ing perfect
I could not have been gingering you could not have been gingering he could not have been gingering we could not have been gingering you could not have been gingering they could not have been gingering
Interrogative form
Simple form
could I ginger? could you ginger? could he ginger? could we ginger? could you ginger? could they ginger?
V-ing form
could I be gingering? could you be gingering? could he be gingering? could we be gingering? could you be gingering? could they be gingering?
Perfect
could I have gingered? could you have gingered? could he have gingered? could we have gingered? could you have gingered? could they have gingered?
V-ing perfect
could I have been gingering? could you have been gingering? could he have been gingering? could we have been gingering? could you have been gingering? could they have been gingering?
Interro-negative form
Simple form
could I not ginger? could you not ginger? could he not ginger? could we not ginger? could you not ginger? could they not ginger?
V-ing form
could I not be gingering? could you not be gingering? could he not be gingering? could we not be gingering? could you not be gingering? could they not be gingering?
Perfect
could I not have gingered? could you not have gingered? could he not have gingered? could we not have gingered? could you not have gingered? could they not have gingered?
V-ing perfect
could I not have been gingering? could you not have been gingering? could he not have been gingering? could we not have been gingering? could you not have been gingering? could they not have been gingering?