must sty
Verbe régulier : sty - stied- stied

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must sty
you must sty
she must sty
we must sty
you must sty
they must sty 	I must be stying
you must be stying
she must be stying
we must be stying
you must be stying
they must be stying	I must have stied
you must have stied
she must have stied
we must have stied
you must have stied
they must have stied	I must have been stying
you must have been stying
she must have been stying
we must have been stying
you must have been stying
they must have been stying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't sty
you mustn't sty
she mustn't sty
we mustn't sty
you mustn't sty
they mustn't sty 	I mustn't be stying
you mustn't be stying
she mustn't be stying
we mustn't be stying
you mustn't be stying
they mustn't be stying	I mustn't have stied
you mustn't have stied
she mustn't have stied
we mustn't have stied
you mustn't have stied
they mustn't have stied	I mustn't have been stying
you mustn't have been stying
she mustn't have been stying
we mustn't have been stying
you mustn't have been stying
they mustn't have been stying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I sty?
must you sty?
must she sty?
must we sty?
must you sty?
must they sty? 	must I be stying?
must you be stying?
must she be stying?
must we be stying?
must you be stying?
must they be stying? 	must I have stied?
must you have stied?
must she have stied?
must we have stied?
must you have stied?
must they have stied? 	must I have been stying?
must you have been stying?
must she have been stying?
must we have been stying?
must you have been stying?
must they have been stying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I sty?
mustn't you sty?
mustn't she sty?
mustn't we sty?
mustn't you sty?
mustn't they sty? 	mustn't I be stying?
mustn't you be stying?
mustn't she be stying?
mustn't we be stying?
mustn't you be stying?
mustn't they be stying? 	mustn't I have stied?
mustn't you have stied?
mustn't she have stied?
mustn't we have stied?
mustn't you have stied?
mustn't they have stied? 	mustn't I have been stying?
mustn't you have been stying?
mustn't she have been stying?
mustn't we have been stying?
mustn't you have been stying?
mustn't they have been stying?