I could camber you could camber she could camber we could camber you could camber they could camber
V-ing form
I could be cambering you could be cambering she could be cambering we could be cambering you could be cambering they could be cambering
Perfect
I could have cambered you could have cambered she could have cambered we could have cambered you could have cambered they could have cambered
V-ing perfect
I could have been cambering you could have been cambering she could have been cambering we could have been cambering you could have been cambering they could have been cambering
Negation
Simple form
I couldn't camber you couldn't camber she couldn't camber we couldn't camber you couldn't camber they couldn't camber
V-ing form
I couldn't be cambering you couldn't be cambering she couldn't be cambering we couldn't be cambering you couldn't be cambering they couldn't be cambering
Perfect
I couldn't have cambered you couldn't have cambered she couldn't have cambered we couldn't have cambered you couldn't have cambered they couldn't have cambered
V-ing perfect
I couldn't have been cambering you couldn't have been cambering she couldn't have been cambering we couldn't have been cambering you couldn't have been cambering they couldn't have been cambering
Interrogative form
Simple form
could I camber? could you camber? could she camber? could we camber? could you camber? could they camber?
V-ing form
could I be cambering? could you be cambering? could she be cambering? could we be cambering? could you be cambering? could they be cambering?
Perfect
could I have cambered? could you have cambered? could she have cambered? could we have cambered? could you have cambered? could they have cambered?
V-ing perfect
could I have been cambering? could you have been cambering? could she have been cambering? could we have been cambering? could you have been cambering? could they have been cambering?
Interro-negative form
Simple form
couldn't I camber? couldn't you camber? couldn't she camber? couldn't we camber? couldn't you camber? couldn't they camber?
V-ing form
couldn't I be cambering? couldn't you be cambering? couldn't she be cambering? couldn't we be cambering? couldn't you be cambering? couldn't they be cambering?
Perfect
couldn't I have cambered? couldn't you have cambered? couldn't she have cambered? couldn't we have cambered? couldn't you have cambered? couldn't they have cambered?
V-ing perfect
couldn't I have been cambering? couldn't you have been cambering? couldn't she have been cambering? couldn't we have been cambering? couldn't you have been cambering? couldn't they have been cambering?