could fret
Verbo regolare: fret - fretted- fretted

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could fret
you could fret
he could fret
we could fret
you could fret
they could fret 	I could be fretting
you could be fretting
he could be fretting
we could be fretting
you could be fretting
they could be fretting	I could have fretted
you could have fretted
he could have fretted
we could have fretted
you could have fretted
they could have fretted	I could have been fretting
you could have been fretting
he could have been fretting
we could have been fretting
you could have been fretting
they could have been fretting	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not fret
you could not fret
he could not fret
we could not fret
you could not fret
they could not fret 	I could not be fretting
you could not be fretting
he could not be fretting
we could not be fretting
you could not be fretting
they could not be fretting	I could not have fretted
you could not have fretted
he could not have fretted
we could not have fretted
you could not have fretted
they could not have fretted	I could not have been fretting
you could not have been fretting
he could not have been fretting
we could not have been fretting
you could not have been fretting
they could not have been fretting	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I fret?
could you fret?
could he fret?
could we fret?
could you fret?
could they fret? 	could I be fretting?
could you be fretting?
could he be fretting?
could we be fretting?
could you be fretting?
could they be fretting? 	could I have fretted?
could you have fretted?
could he have fretted?
could we have fretted?
could you have fretted?
could they have fretted? 	could I have been fretting?
could you have been fretting?
could he have been fretting?
could we have been fretting?
could you have been fretting?
could they have been fretting? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not fret?
could you not fret?
could he not fret?
could we not fret?
could you not fret?
could they not fret? 	could I not be fretting?
could you not be fretting?
could he not be fretting?
could we not be fretting?
could you not be fretting?
could they not be fretting? 	could I not have fretted?
could you not have fretted?
could he not have fretted?
could we not have fretted?
could you not have fretted?
could they not have fretted? 	could I not have been fretting?
could you not have been fretting?
could he not have been fretting?
could we not have been fretting?
could you not have been fretting?
could they not have been fretting?