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