I could elbow you could elbow he could elbow we could elbow you could elbow they could elbow
V-ing form
I could be elbowing you could be elbowing he could be elbowing we could be elbowing you could be elbowing they could be elbowing
Perfect
I could have elbowed you could have elbowed he could have elbowed we could have elbowed you could have elbowed they could have elbowed
V-ing perfect
I could have been elbowing you could have been elbowing he could have been elbowing we could have been elbowing you could have been elbowing they could have been elbowing
Negation
Simple form
I could not elbow you could not elbow he could not elbow we could not elbow you could not elbow they could not elbow
V-ing form
I could not be elbowing you could not be elbowing he could not be elbowing we could not be elbowing you could not be elbowing they could not be elbowing
Perfect
I could not have elbowed you could not have elbowed he could not have elbowed we could not have elbowed you could not have elbowed they could not have elbowed
V-ing perfect
I could not have been elbowing you could not have been elbowing he could not have been elbowing we could not have been elbowing you could not have been elbowing they could not have been elbowing
Interrogative form
Simple form
could I elbow? could you elbow? could he elbow? could we elbow? could you elbow? could they elbow?
V-ing form
could I be elbowing? could you be elbowing? could he be elbowing? could we be elbowing? could you be elbowing? could they be elbowing?
Perfect
could I have elbowed? could you have elbowed? could he have elbowed? could we have elbowed? could you have elbowed? could they have elbowed?
V-ing perfect
could I have been elbowing? could you have been elbowing? could he have been elbowing? could we have been elbowing? could you have been elbowing? could they have been elbowing?
Interro-negative form
Simple form
could I not elbow? could you not elbow? could he not elbow? could we not elbow? could you not elbow? could they not elbow?
V-ing form
could I not be elbowing? could you not be elbowing? could he not be elbowing? could we not be elbowing? could you not be elbowing? could they not be elbowing?
Perfect
could I not have elbowed? could you not have elbowed? could he not have elbowed? could we not have elbowed? could you not have elbowed? could they not have elbowed?
V-ing perfect
could I not have been elbowing? could you not have been elbowing? could he not have been elbowing? could we not have been elbowing? could you not have been elbowing? could they not have been elbowing?