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