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