ought to persevere
Regular verb: persevere - persevered- persevered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to persevere
you ought to persevere
she ought to persevere
we ought to persevere
you ought to persevere
they ought to persevere 	I ought to be persevering
you ought to be persevering
she ought to be persevering
we ought to be persevering
you ought to be persevering
they ought to be persevering	I ought to have persevered
you ought to have persevered
she ought to have persevered
we ought to have persevered
you ought to have persevered
they ought to have persevered	I ought to have been persevering
you ought to have been persevering
she ought to have been persevering
we ought to have been persevering
you ought to have been persevering
they ought to have been persevering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to persevere
you oughtn't to persevere
she oughtn't to persevere
we oughtn't to persevere
you oughtn't to persevere
they oughtn't to persevere 	I oughtn't to be persevering
you oughtn't to be persevering
she oughtn't to be persevering
we oughtn't to be persevering
you oughtn't to be persevering
they oughtn't to be persevering	I oughtn't to have persevered
you oughtn't to have persevered
she oughtn't to have persevered
we oughtn't to have persevered
you oughtn't to have persevered
they oughtn't to have persevered	I oughtn't to have been persevering
you oughtn't to have been persevering
she oughtn't to have been persevering
we oughtn't to have been persevering
you oughtn't to have been persevering
they oughtn't to have been persevering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I persevere?
ought to you persevere?
ought to she persevere?
ought to we persevere?
ought to you persevere?
ought to they persevere? 	ought to I be persevering?
ought to you be persevering?
ought to she be persevering?
ought to we be persevering?
ought to you be persevering?
ought to they be persevering? 	ought to I have persevered?
ought to you have persevered?
ought to she have persevered?
ought to we have persevered?
ought to you have persevered?
ought to they have persevered? 	ought to I have been persevering?
ought to you have been persevering?
ought to she have been persevering?
ought to we have been persevering?
ought to you have been persevering?
ought to they have been persevering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to persevere?
oughtn't you to persevere?
oughtn't she to persevere?
oughtn't we to persevere?
oughtn't you to persevere?
oughtn't they to persevere? 	oughtn't I to be persevering?
oughtn't you to be persevering?
oughtn't she to be persevering?
oughtn't we to be persevering?
oughtn't you to be persevering?
oughtn't they to be persevering? 	oughtn't I to have persevered?
oughtn't you to have persevered?
oughtn't she to have persevered?
oughtn't we to have persevered?
oughtn't you to have persevered?
oughtn't they to have persevered? 	oughtn't I to have been persevering?
oughtn't you to have been persevering?
oughtn't she to have been persevering?
oughtn't we to have been persevering?
oughtn't you to have been persevering?
oughtn't they to have been persevering?