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