I could finger you could finger he could finger we could finger you could finger they could finger
V-ing form
I could be fingering you could be fingering he could be fingering we could be fingering you could be fingering they could be fingering
Perfect
I could have fingered you could have fingered he could have fingered we could have fingered you could have fingered they could have fingered
V-ing perfect
I could have been fingering you could have been fingering he could have been fingering we could have been fingering you could have been fingering they could have been fingering
Negation
Simple form
I could not finger you could not finger he could not finger we could not finger you could not finger they could not finger
V-ing form
I could not be fingering you could not be fingering he could not be fingering we could not be fingering you could not be fingering they could not be fingering
Perfect
I could not have fingered you could not have fingered he could not have fingered we could not have fingered you could not have fingered they could not have fingered
V-ing perfect
I could not have been fingering you could not have been fingering he could not have been fingering we could not have been fingering you could not have been fingering they could not have been fingering
Interrogative form
Simple form
could I finger? could you finger? could he finger? could we finger? could you finger? could they finger?
V-ing form
could I be fingering? could you be fingering? could he be fingering? could we be fingering? could you be fingering? could they be fingering?
Perfect
could I have fingered? could you have fingered? could he have fingered? could we have fingered? could you have fingered? could they have fingered?
V-ing perfect
could I have been fingering? could you have been fingering? could he have been fingering? could we have been fingering? could you have been fingering? could they have been fingering?
Interro-negative form
Simple form
could I not finger? could you not finger? could he not finger? could we not finger? could you not finger? could they not finger?
V-ing form
could I not be fingering? could you not be fingering? could he not be fingering? could we not be fingering? could you not be fingering? could they not be fingering?
Perfect
could I not have fingered? could you not have fingered? could he not have fingered? could we not have fingered? could you not have fingered? could they not have fingered?
V-ing perfect
could I not have been fingering? could you not have been fingering? could he not have been fingering? could we not have been fingering? could you not have been fingering? could they not have been fingering?