I could copy-edit you could copy-edit he could copy-edit we could copy-edit you could copy-edit they could copy-edit
V-ing form
I could be copy-editing you could be copy-editing he could be copy-editing we could be copy-editing you could be copy-editing they could be copy-editing
Perfect
I could have copy-edited you could have copy-edited he could have copy-edited we could have copy-edited you could have copy-edited they could have copy-edited
V-ing perfect
I could have been copy-editing you could have been copy-editing he could have been copy-editing we could have been copy-editing you could have been copy-editing they could have been copy-editing
Negation
Simple form
I could not copy-edit you could not copy-edit he could not copy-edit we could not copy-edit you could not copy-edit they could not copy-edit
V-ing form
I could not be copy-editing you could not be copy-editing he could not be copy-editing we could not be copy-editing you could not be copy-editing they could not be copy-editing
Perfect
I could not have copy-edited you could not have copy-edited he could not have copy-edited we could not have copy-edited you could not have copy-edited they could not have copy-edited
V-ing perfect
I could not have been copy-editing you could not have been copy-editing he could not have been copy-editing we could not have been copy-editing you could not have been copy-editing they could not have been copy-editing
Interrogative form
Simple form
could I copy-edit? could you copy-edit? could he copy-edit? could we copy-edit? could you copy-edit? could they copy-edit?
V-ing form
could I be copy-editing? could you be copy-editing? could he be copy-editing? could we be copy-editing? could you be copy-editing? could they be copy-editing?
Perfect
could I have copy-edited? could you have copy-edited? could he have copy-edited? could we have copy-edited? could you have copy-edited? could they have copy-edited?
V-ing perfect
could I have been copy-editing? could you have been copy-editing? could he have been copy-editing? could we have been copy-editing? could you have been copy-editing? could they have been copy-editing?
Interro-negative form
Simple form
could I not copy-edit? could you not copy-edit? could he not copy-edit? could we not copy-edit? could you not copy-edit? could they not copy-edit?
V-ing form
could I not be copy-editing? could you not be copy-editing? could he not be copy-editing? could we not be copy-editing? could you not be copy-editing? could they not be copy-editing?
Perfect
could I not have copy-edited? could you not have copy-edited? could he not have copy-edited? could we not have copy-edited? could you not have copy-edited? could they not have copy-edited?
V-ing perfect
could I not have been copy-editing? could you not have been copy-editing? could he not have been copy-editing? could we not have been copy-editing? could you not have been copy-editing? could they not have been copy-editing?