must rarefy
Verbe régulier : rarefy - rarefied- rarefied
Traduction française : raréfier - se raréfier 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rarefy
you must rarefy
she must rarefy
we must rarefy
you must rarefy
they must rarefy 	I must be rarefying
you must be rarefying
she must be rarefying
we must be rarefying
you must be rarefying
they must be rarefying	I must have rarefied
you must have rarefied
she must have rarefied
we must have rarefied
you must have rarefied
they must have rarefied	I must have been rarefying
you must have been rarefying
she must have been rarefying
we must have been rarefying
you must have been rarefying
they must have been rarefying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't rarefy
you mustn't rarefy
she mustn't rarefy
we mustn't rarefy
you mustn't rarefy
they mustn't rarefy 	I mustn't be rarefying
you mustn't be rarefying
she mustn't be rarefying
we mustn't be rarefying
you mustn't be rarefying
they mustn't be rarefying	I mustn't have rarefied
you mustn't have rarefied
she mustn't have rarefied
we mustn't have rarefied
you mustn't have rarefied
they mustn't have rarefied	I mustn't have been rarefying
you mustn't have been rarefying
she mustn't have been rarefying
we mustn't have been rarefying
you mustn't have been rarefying
they mustn't have been rarefying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rarefy?
must you rarefy?
must she rarefy?
must we rarefy?
must you rarefy?
must they rarefy? 	must I be rarefying?
must you be rarefying?
must she be rarefying?
must we be rarefying?
must you be rarefying?
must they be rarefying? 	must I have rarefied?
must you have rarefied?
must she have rarefied?
must we have rarefied?
must you have rarefied?
must they have rarefied? 	must I have been rarefying?
must you have been rarefying?
must she have been rarefying?
must we have been rarefying?
must you have been rarefying?
must they have been rarefying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I rarefy?
mustn't you rarefy?
mustn't she rarefy?
mustn't we rarefy?
mustn't you rarefy?
mustn't they rarefy? 	mustn't I be rarefying?
mustn't you be rarefying?
mustn't she be rarefying?
mustn't we be rarefying?
mustn't you be rarefying?
mustn't they be rarefying? 	mustn't I have rarefied?
mustn't you have rarefied?
mustn't she have rarefied?
mustn't we have rarefied?
mustn't you have rarefied?
mustn't they have rarefied? 	mustn't I have been rarefying?
mustn't you have been rarefying?
mustn't she have been rarefying?
mustn't we have been rarefying?
mustn't you have been rarefying?
mustn't they have been rarefying?