could refilter
Verbo regolare: refilter - refiltered- refiltered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could refilter
you could refilter
she could refilter
we could refilter
you could refilter
they could refilter 	I could be refiltering
you could be refiltering
she could be refiltering
we could be refiltering
you could be refiltering
they could be refiltering	I could have refiltered
you could have refiltered
she could have refiltered
we could have refiltered
you could have refiltered
they could have refiltered	I could have been refiltering
you could have been refiltering
she could have been refiltering
we could have been refiltering
you could have been refiltering
they could have been refiltering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not refilter
you could not refilter
she could not refilter
we could not refilter
you could not refilter
they could not refilter 	I could not be refiltering
you could not be refiltering
she could not be refiltering
we could not be refiltering
you could not be refiltering
they could not be refiltering	I could not have refiltered
you could not have refiltered
she could not have refiltered
we could not have refiltered
you could not have refiltered
they could not have refiltered	I could not have been refiltering
you could not have been refiltering
she could not have been refiltering
we could not have been refiltering
you could not have been refiltering
they could not have been refiltering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I refilter?
could you refilter?
could she refilter?
could we refilter?
could you refilter?
could they refilter? 	could I be refiltering?
could you be refiltering?
could she be refiltering?
could we be refiltering?
could you be refiltering?
could they be refiltering? 	could I have refiltered?
could you have refiltered?
could she have refiltered?
could we have refiltered?
could you have refiltered?
could they have refiltered? 	could I have been refiltering?
could you have been refiltering?
could she have been refiltering?
could we have been refiltering?
could you have been refiltering?
could they have been refiltering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not refilter?
could you not refilter?
could she not refilter?
could we not refilter?
could you not refilter?
could they not refilter? 	could I not be refiltering?
could you not be refiltering?
could she not be refiltering?
could we not be refiltering?
could you not be refiltering?
could they not be refiltering? 	could I not have refiltered?
could you not have refiltered?
could she not have refiltered?
could we not have refiltered?
could you not have refiltered?
could they not have refiltered? 	could I not have been refiltering?
could you not have been refiltering?
could she not have been refiltering?
could we not have been refiltering?
could you not have been refiltering?
could they not have been refiltering?