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 couldn't elbow you couldn't elbow he couldn't elbow we couldn't elbow you couldn't elbow they couldn't elbow
V-ing form
I couldn't be elbowing you couldn't be elbowing he couldn't be elbowing we couldn't be elbowing you couldn't be elbowing they couldn't be elbowing
Perfect
I couldn't have elbowed you couldn't have elbowed he couldn't have elbowed we couldn't have elbowed you couldn't have elbowed they couldn't have elbowed
V-ing perfect
I couldn't have been elbowing you couldn't have been elbowing he couldn't have been elbowing we couldn't have been elbowing you couldn't have been elbowing they couldn't 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
couldn't I elbow? couldn't you elbow? couldn't he elbow? couldn't we elbow? couldn't you elbow? couldn't they elbow?
V-ing form
couldn't I be elbowing? couldn't you be elbowing? couldn't he be elbowing? couldn't we be elbowing? couldn't you be elbowing? couldn't they be elbowing?
Perfect
couldn't I have elbowed? couldn't you have elbowed? couldn't he have elbowed? couldn't we have elbowed? couldn't you have elbowed? couldn't they have elbowed?
V-ing perfect
couldn't I have been elbowing? couldn't you have been elbowing? couldn't he have been elbowing? couldn't we have been elbowing? couldn't you have been elbowing? couldn't they have been elbowing?