Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could copy copy you could copy copy he could copy copy we could copy copy you could copy copy they could copy copy
V-ing form
I could be copy copying you could be copy copying he could be copy copying we could be copy copying you could be copy copying they could be copy copying
Perfect
I could have copy copied you could have copy copied he could have copy copied we could have copy copied you could have copy copied they could have copy copied
V-ing perfect
I could have been copy copying you could have been copy copying he could have been copy copying we could have been copy copying you could have been copy copying they could have been copy copying
Negation
Simple form
I could not copy copy you could not copy copy he could not copy copy we could not copy copy you could not copy copy they could not copy copy
V-ing form
I could not be copy copying you could not be copy copying he could not be copy copying we could not be copy copying you could not be copy copying they could not be copy copying
Perfect
I could not have copy copied you could not have copy copied he could not have copy copied we could not have copy copied you could not have copy copied they could not have copy copied
V-ing perfect
I could not have been copy copying you could not have been copy copying he could not have been copy copying we could not have been copy copying you could not have been copy copying they could not have been copy copying
Interrogative form
Simple form
could I copy copy? could you copy copy? could he copy copy? could we copy copy? could you copy copy? could they copy copy?
V-ing form
could I be copy copying? could you be copy copying? could he be copy copying? could we be copy copying? could you be copy copying? could they be copy copying?
Perfect
could I have copy copied? could you have copy copied? could he have copy copied? could we have copy copied? could you have copy copied? could they have copy copied?
V-ing perfect
could I have been copy copying? could you have been copy copying? could he have been copy copying? could we have been copy copying? could you have been copy copying? could they have been copy copying?
Interro-negative form
Simple form
could I not copy copy? could you not copy copy? could he not copy copy? could we not copy copy? could you not copy copy? could they not copy copy?
V-ing form
could I not be copy copying? could you not be copy copying? could he not be copy copying? could we not be copy copying? could you not be copy copying? could they not be copy copying?
Perfect
could I not have copy copied? could you not have copy copied? could he not have copy copied? could we not have copy copied? could you not have copy copied? could they not have copy copied?
V-ing perfect
could I not have been copy copying? could you not have been copy copying? could he not have been copy copying? could we not have been copy copying? could you not have been copy copying? could they not have been copy copying?