English verb conjugation
MUST COPYRIGHT

Regular verb: copyright - copyrighted - copyrighted

Affirmation

Simple form	V-ing form
I must copyright you must copyright he must copyright we must copyright you must copyright they must copyright	I must be copyrighting you must be copyrighting he must be copyrighting we must be copyrighting you must be copyrighting they must be copyrighting
Perfect	V-ing perfect
I must have copyrighted you must have copyrighted he must have copyrighted we must have copyrighted you must have copyrighted they must have copyrighted	I must have been copyrighting you must have been copyrighting he must have been copyrighting we must have been copyrighting you must have been copyrighting they must have been copyrighting

Negation

Simple form	V-ing form
I mustn't copyright you mustn't copyright he mustn't copyright we mustn't copyright you mustn't copyright they mustn't copyright	I mustn't be copyrighting you mustn't be copyrighting he mustn't be copyrighting we mustn't be copyrighting you mustn't be copyrighting they mustn't be copyrighting
Perfect	V-ing perfect
I mustn't have copyrighted you mustn't have copyrighted he mustn't have copyrighted we mustn't have copyrighted you mustn't have copyrighted they mustn't have copyrighted	I mustn't have been copyrighting you mustn't have been copyrighting he mustn't have been copyrighting we mustn't have been copyrighting you mustn't have been copyrighting they mustn't have been copyrighting

Interrogative form

Simple form	V-ing form
must I copyright? must you copyright? must he copyright? must we copyright? must you copyright? must they copyright?	must I be copyrighting? must you be copyrighting? must he be copyrighting? must we be copyrighting? must you be copyrighting? must they be copyrighting?
Perfect	V-ing perfect
must I have copyrighted? must you have copyrighted? must he have copyrighted? must we have copyrighted? must you have copyrighted? must they have copyrighted?	must I have been copyrighting? must you have been copyrighting? must he have been copyrighting? must we have been copyrighting? must you have been copyrighting? must they have been copyrighting?

Interro-negative form

Simple form	V-ing form
mustn't I copyright? mustn't you copyright? mustn't he copyright? mustn't we copyright? mustn't you copyright? mustn't they copyright?	mustn't I be copyrighting? mustn't you be copyrighting? mustn't he be copyrighting? mustn't we be copyrighting? mustn't you be copyrighting? mustn't they be copyrighting?
Perfect	V-ing perfect
mustn't I have copyrighted? mustn't you have copyrighted? mustn't he have copyrighted? mustn't we have copyrighted? mustn't you have copyrighted? mustn't they have copyrighted?	mustn't I have been copyrighting? mustn't you have been copyrighting? mustn't he have been copyrighting? mustn't we have been copyrighting? mustn't you have been copyrighting? mustn't they have been copyrighting?