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

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

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

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

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