I could anger you could anger he could anger we could anger you could anger they could anger
V-ing form
I could be angering you could be angering he could be angering we could be angering you could be angering they could be angering
Perfect
I could have angered you could have angered he could have angered we could have angered you could have angered they could have angered
V-ing perfect
I could have been angering you could have been angering he could have been angering we could have been angering you could have been angering they could have been angering
Negation
Simple form
I couldn't anger you couldn't anger he couldn't anger we couldn't anger you couldn't anger they couldn't anger
V-ing form
I couldn't be angering you couldn't be angering he couldn't be angering we couldn't be angering you couldn't be angering they couldn't be angering
Perfect
I couldn't have angered you couldn't have angered he couldn't have angered we couldn't have angered you couldn't have angered they couldn't have angered
V-ing perfect
I couldn't have been angering you couldn't have been angering he couldn't have been angering we couldn't have been angering you couldn't have been angering they couldn't have been angering
Interrogative form
Simple form
could I anger? could you anger? could he anger? could we anger? could you anger? could they anger?
V-ing form
could I be angering? could you be angering? could he be angering? could we be angering? could you be angering? could they be angering?
Perfect
could I have angered? could you have angered? could he have angered? could we have angered? could you have angered? could they have angered?
V-ing perfect
could I have been angering? could you have been angering? could he have been angering? could we have been angering? could you have been angering? could they have been angering?
Interro-negative form
Simple form
couldn't I anger? couldn't you anger? couldn't he anger? couldn't we anger? couldn't you anger? couldn't they anger?
V-ing form
couldn't I be angering? couldn't you be angering? couldn't he be angering? couldn't we be angering? couldn't you be angering? couldn't they be angering?
Perfect
couldn't I have angered? couldn't you have angered? couldn't he have angered? couldn't we have angered? couldn't you have angered? couldn't they have angered?
V-ing perfect
couldn't I have been angering? couldn't you have been angering? couldn't he have been angering? couldn't we have been angering? couldn't you have been angering? couldn't they have been angering?