can fret
Verbe régulier : fret - fretted- fretted
Traduction française : tracasser - ronger 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can fret
you can fret
he can fret
we can fret
you can fret
they can fret 	I can be fretting
you can be fretting
he can be fretting
we can be fretting
you can be fretting
they can be fretting	I can have fretted
you can have fretted
he can have fretted
we can have fretted
you can have fretted
they can have fretted	I can have been fretting
you can have been fretting
he can have been fretting
we can have been fretting
you can have been fretting
they can have been fretting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't fret
you can't fret
he can't fret
we can't fret
you can't fret
they can't fret 	I can't be fretting
you can't be fretting
he can't be fretting
we can't be fretting
you can't be fretting
they can't be fretting	I can't have fretted
you can't have fretted
he can't have fretted
we can't have fretted
you can't have fretted
they can't have fretted	I can't have been fretting
you can't have been fretting
he can't have been fretting
we can't have been fretting
you can't have been fretting
they can't have been fretting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I fret?
can you fret?
can he fret?
can we fret?
can you fret?
can they fret? 	can I be fretting?
can you be fretting?
can he be fretting?
can we be fretting?
can you be fretting?
can they be fretting? 	can I have fretted?
can you have fretted?
can he have fretted?
can we have fretted?
can you have fretted?
can they have fretted? 	can I have been fretting?
can you have been fretting?
can he have been fretting?
can we have been fretting?
can you have been fretting?
can they have been fretting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can't I fret?
can't you fret?
can't he fret?
can't we fret?
can't you fret?
can't they fret? 	can't I be fretting?
can't you be fretting?
can't he be fretting?
can't we be fretting?
can't you be fretting?
can't they be fretting? 	can't I have fretted?
can't you have fretted?
can't he have fretted?
can't we have fretted?
can't you have fretted?
can't they have fretted? 	can't I have been fretting?
can't you have been fretting?
can't he have been fretting?
can't we have been fretting?
can't you have been fretting?
can't they have been fretting?