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