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