should fret
Regular verb: fret - fretted- fretted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd fret
you'd fret
he'd fret
we'd fret
you'd fret
they'd fret 	I'd be fretting
you'd be fretting
he'd be fretting
we'd be fretting
you'd be fretting
they'd be fretting	I should've fretted
you should've fretted
he should've fretted
we should've fretted
you should've fretted
they should've fretted	I should've been fretting
you should've been fretting
he should've been fretting
we should've been fretting
you should've been fretting
they should've been fretting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't fret
you shouldn't fret
he shouldn't fret
we shouldn't fret
you shouldn't fret
they shouldn't fret 	I shouldn't be fretting
you shouldn't be fretting
he shouldn't be fretting
we shouldn't be fretting
you shouldn't be fretting
they shouldn't be fretting	I shouldn't have fretted
you shouldn't have fretted
he shouldn't have fretted
we shouldn't have fretted
you shouldn't have fretted
they shouldn't have fretted	I shouldn't have been fretting
you shouldn't have been fretting
he shouldn't have been fretting
we shouldn't have been fretting
you shouldn't have been fretting
they shouldn't have been fretting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I fret?
should you fret?
should he fret?
should we fret?
should you fret?
should they fret? 	should I be fretting?
should you be fretting?
should he be fretting?
should we be fretting?
should you be fretting?
should they be fretting? 	should I have fretted?
should you have fretted?
should he have fretted?
should we have fretted?
should you have fretted?
should they have fretted? 	should I have been fretting?
should you have been fretting?
should he have been fretting?
should we have been fretting?
should you have been fretting?
should they have been fretting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I fret?
shouldn't you fret?
shouldn't he fret?
shouldn't we fret?
shouldn't you fret?
shouldn't they fret? 	shouldn't I be fretting?
shouldn't you be fretting?
shouldn't he be fretting?
shouldn't we be fretting?
shouldn't you be fretting?
shouldn't they be fretting? 	shouldn't I have fretted?
shouldn't you have fretted?
shouldn't he have fretted?
shouldn't we have fretted?
shouldn't you have fretted?
shouldn't they have fretted? 	shouldn't I have been fretting?
shouldn't you have been fretting?
shouldn't he have been fretting?
shouldn't we have been fretting?
shouldn't you have been fretting?
shouldn't they have been fretting?