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 couldn't bother you couldn't bother she couldn't bother we couldn't bother you couldn't bother they couldn't bother
V-ing form
I couldn't be bothering you couldn't be bothering she couldn't be bothering we couldn't be bothering you couldn't be bothering they couldn't be bothering
Perfect
I couldn't have bothered you couldn't have bothered she couldn't have bothered we couldn't have bothered you couldn't have bothered they couldn't have bothered
V-ing perfect
I couldn't have been bothering you couldn't have been bothering she couldn't have been bothering we couldn't have been bothering you couldn't have been bothering they couldn't 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
couldn't I bother? couldn't you bother? couldn't she bother? couldn't we bother? couldn't you bother? couldn't they bother?
V-ing form
couldn't I be bothering? couldn't you be bothering? couldn't she be bothering? couldn't we be bothering? couldn't you be bothering? couldn't they be bothering?
Perfect
couldn't I have bothered? couldn't you have bothered? couldn't she have bothered? couldn't we have bothered? couldn't you have bothered? couldn't they have bothered?
V-ing perfect
couldn't I have been bothering? couldn't you have been bothering? couldn't she have been bothering? couldn't we have been bothering? couldn't you have been bothering? couldn't they have been bothering?