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