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