must pretty
Verbe régulier : pretty - prettied- prettied

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must pretty
you must pretty
he must pretty
we must pretty
you must pretty
they must pretty 	I must be prettying
you must be prettying
he must be prettying
we must be prettying
you must be prettying
they must be prettying	I must have prettied
you must have prettied
he must have prettied
we must have prettied
you must have prettied
they must have prettied	I must have been prettying
you must have been prettying
he must have been prettying
we must have been prettying
you must have been prettying
they must have been prettying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't pretty
you mustn't pretty
he mustn't pretty
we mustn't pretty
you mustn't pretty
they mustn't pretty 	I mustn't be prettying
you mustn't be prettying
he mustn't be prettying
we mustn't be prettying
you mustn't be prettying
they mustn't be prettying	I mustn't have prettied
you mustn't have prettied
he mustn't have prettied
we mustn't have prettied
you mustn't have prettied
they mustn't have prettied	I mustn't have been prettying
you mustn't have been prettying
he mustn't have been prettying
we mustn't have been prettying
you mustn't have been prettying
they mustn't have been prettying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I pretty?
must you pretty?
must he pretty?
must we pretty?
must you pretty?
must they pretty? 	must I be prettying?
must you be prettying?
must he be prettying?
must we be prettying?
must you be prettying?
must they be prettying? 	must I have prettied?
must you have prettied?
must he have prettied?
must we have prettied?
must you have prettied?
must they have prettied? 	must I have been prettying?
must you have been prettying?
must he have been prettying?
must we have been prettying?
must you have been prettying?
must they have been prettying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I pretty?
mustn't you pretty?
mustn't he pretty?
mustn't we pretty?
mustn't you pretty?
mustn't they pretty? 	mustn't I be prettying?
mustn't you be prettying?
mustn't he be prettying?
mustn't we be prettying?
mustn't you be prettying?
mustn't they be prettying? 	mustn't I have prettied?
mustn't you have prettied?
mustn't he have prettied?
mustn't we have prettied?
mustn't you have prettied?
mustn't they have prettied? 	mustn't I have been prettying?
mustn't you have been prettying?
mustn't he have been prettying?
mustn't we have been prettying?
mustn't you have been prettying?
mustn't they have been prettying?