I could scamper you could scamper she could scamper we could scamper you could scamper they could scamper
V-ing form
I could be scampering you could be scampering she could be scampering we could be scampering you could be scampering they could be scampering
Perfect
I could have scampered you could have scampered she could have scampered we could have scampered you could have scampered they could have scampered
V-ing perfect
I could have been scampering you could have been scampering she could have been scampering we could have been scampering you could have been scampering they could have been scampering
Negation
Simple form
I could not scamper you could not scamper she could not scamper we could not scamper you could not scamper they could not scamper
V-ing form
I could not be scampering you could not be scampering she could not be scampering we could not be scampering you could not be scampering they could not be scampering
Perfect
I could not have scampered you could not have scampered she could not have scampered we could not have scampered you could not have scampered they could not have scampered
V-ing perfect
I could not have been scampering you could not have been scampering she could not have been scampering we could not have been scampering you could not have been scampering they could not have been scampering
Interrogative form
Simple form
could I scamper? could you scamper? could she scamper? could we scamper? could you scamper? could they scamper?
V-ing form
could I be scampering? could you be scampering? could she be scampering? could we be scampering? could you be scampering? could they be scampering?
Perfect
could I have scampered? could you have scampered? could she have scampered? could we have scampered? could you have scampered? could they have scampered?
V-ing perfect
could I have been scampering? could you have been scampering? could she have been scampering? could we have been scampering? could you have been scampering? could they have been scampering?
Interro-negative form
Simple form
could I not scamper? could you not scamper? could she not scamper? could we not scamper? could you not scamper? could they not scamper?
V-ing form
could I not be scampering? could you not be scampering? could she not be scampering? could we not be scampering? could you not be scampering? could they not be scampering?
Perfect
could I not have scampered? could you not have scampered? could she not have scampered? could we not have scampered? could you not have scampered? could they not have scampered?
V-ing perfect
could I not have been scampering? could you not have been scampering? could she not have been scampering? could we not have been scampering? could you not have been scampering? could they not have been scampering?