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