I must pirate you must pirate he must pirate we must pirate you must pirate they must pirate
V-ing form
I must be pirating you must be pirating he must be pirating we must be pirating you must be pirating they must be pirating
Perfect
I must have pirated you must have pirated he must have pirated we must have pirated you must have pirated they must have pirated
V-ing perfect
I must have been pirating you must have been pirating he must have been pirating we must have been pirating you must have been pirating they must have been pirating
Negation
Simple form
I mustn't pirate you mustn't pirate he mustn't pirate we mustn't pirate you mustn't pirate they mustn't pirate
V-ing form
I mustn't be pirating you mustn't be pirating he mustn't be pirating we mustn't be pirating you mustn't be pirating they mustn't be pirating
Perfect
I mustn't have pirated you mustn't have pirated he mustn't have pirated we mustn't have pirated you mustn't have pirated they mustn't have pirated
V-ing perfect
I mustn't have been pirating you mustn't have been pirating he mustn't have been pirating we mustn't have been pirating you mustn't have been pirating they mustn't have been pirating
Interrogative form
Simple form
must I pirate? must you pirate? must he pirate? must we pirate? must you pirate? must they pirate?
V-ing form
must I be pirating? must you be pirating? must he be pirating? must we be pirating? must you be pirating? must they be pirating?
Perfect
must I have pirated? must you have pirated? must he have pirated? must we have pirated? must you have pirated? must they have pirated?
V-ing perfect
must I have been pirating? must you have been pirating? must he have been pirating? must we have been pirating? must you have been pirating? must they have been pirating?
Interro-negative form
Simple form
mustn't I pirate? mustn't you pirate? mustn't he pirate? mustn't we pirate? mustn't you pirate? mustn't they pirate?
V-ing form
mustn't I be pirating? mustn't you be pirating? mustn't he be pirating? mustn't we be pirating? mustn't you be pirating? mustn't they be pirating?
Perfect
mustn't I have pirated? mustn't you have pirated? mustn't he have pirated? mustn't we have pirated? mustn't you have pirated? mustn't they have pirated?
V-ing perfect
mustn't I have been pirating? mustn't you have been pirating? mustn't he have been pirating? mustn't we have been pirating? mustn't you have been pirating? mustn't they have been pirating?