could rarefy
Verbo regolare: rarefy - rarefied- rarefied

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could rarefy
you could rarefy
he could rarefy
we could rarefy
you could rarefy
they could rarefy 	I could be rarefying
you could be rarefying
he could be rarefying
we could be rarefying
you could be rarefying
they could be rarefying	I could have rarefied
you could have rarefied
he 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
he could have been rarefying
we could have been rarefying
you could have been rarefying
they could have been rarefying	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't rarefy
you couldn't rarefy
he 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
he 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
he 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
he couldn't have been rarefying
we couldn't have been rarefying
you couldn't have been rarefying
they couldn't have been rarefying	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I rarefy?
could you rarefy?
could he rarefy?
could we rarefy?
could you rarefy?
could they rarefy? 	could I be rarefying?
could you be rarefying?
could he be rarefying?
could we be rarefying?
could you be rarefying?
could they be rarefying? 	could I have rarefied?
could you have rarefied?
could he 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 he have been rarefying?
could we have been rarefying?
could you have been rarefying?
could they have been rarefying? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I rarefy?
couldn't you rarefy?
couldn't he 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 he 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 he 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 he have been rarefying?
couldn't we have been rarefying?
couldn't you have been rarefying?
couldn't they have been rarefying?