ought to fret
Regular verb: fret - fretted- fretted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to fret
you ought to fret
he ought to fret
we ought to fret
you ought to fret
they ought to fret 	I ought to be fretting
you ought to be fretting
he ought to be fretting
we ought to be fretting
you ought to be fretting
they ought to be fretting	I ought to have fretted
you ought to have fretted
he ought to have fretted
we ought to have fretted
you ought to have fretted
they ought to have fretted	I ought to have been fretting
you ought to have been fretting
he ought to have been fretting
we ought to have been fretting
you ought to have been fretting
they ought to have been fretting	

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

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

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