I could bother you could bother she could bother we could bother you could bother they could bother
V-ing form
I could be bothering you could be bothering she could be bothering we could be bothering you could be bothering they could be bothering
Perfect
I could have bothered you could have bothered she could have bothered we could have bothered you could have bothered they could have bothered
V-ing perfect
I could have been bothering you could have been bothering she could have been bothering we could have been bothering you could have been bothering they could have been bothering
Negation
Simple form
I could not bother you could not bother she could not bother we could not bother you could not bother they could not bother
V-ing form
I could not be bothering you could not be bothering she could not be bothering we could not be bothering you could not be bothering they could not be bothering
Perfect
I could not have bothered you could not have bothered she could not have bothered we could not have bothered you could not have bothered they could not have bothered
V-ing perfect
I could not have been bothering you could not have been bothering she could not have been bothering we could not have been bothering you could not have been bothering they could not have been bothering
Interrogative form
Simple form
could I bother? could you bother? could she bother? could we bother? could you bother? could they bother?
V-ing form
could I be bothering? could you be bothering? could she be bothering? could we be bothering? could you be bothering? could they be bothering?
Perfect
could I have bothered? could you have bothered? could she have bothered? could we have bothered? could you have bothered? could they have bothered?
V-ing perfect
could I have been bothering? could you have been bothering? could she have been bothering? could we have been bothering? could you have been bothering? could they have been bothering?
Interro-negative form
Simple form
could I not bother? could you not bother? could she not bother? could we not bother? could you not bother? could they not bother?
V-ing form
could I not be bothering? could you not be bothering? could she not be bothering? could we not be bothering? could you not be bothering? could they not be bothering?
Perfect
could I not have bothered? could you not have bothered? could she not have bothered? could we not have bothered? could you not have bothered? could they not have bothered?
V-ing perfect
could I not have been bothering? could you not have been bothering? could she not have been bothering? could we not have been bothering? could you not have been bothering? could they not have been bothering?