ought to perpetuate
Regular verb: perpetuate - perpetuated- perpetuated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to perpetuate
you ought to perpetuate
he ought to perpetuate
we ought to perpetuate
you ought to perpetuate
they ought to perpetuate 	I ought to be perpetuating
you ought to be perpetuating
he ought to be perpetuating
we ought to be perpetuating
you ought to be perpetuating
they ought to be perpetuating	I ought to have perpetuated
you ought to have perpetuated
he ought to have perpetuated
we ought to have perpetuated
you ought to have perpetuated
they ought to have perpetuated	I ought to have been perpetuating
you ought to have been perpetuating
he ought to have been perpetuating
we ought to have been perpetuating
you ought to have been perpetuating
they ought to have been perpetuating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to perpetuate
you oughtn't to perpetuate
he oughtn't to perpetuate
we oughtn't to perpetuate
you oughtn't to perpetuate
they oughtn't to perpetuate 	I oughtn't to be perpetuating
you oughtn't to be perpetuating
he oughtn't to be perpetuating
we oughtn't to be perpetuating
you oughtn't to be perpetuating
they oughtn't to be perpetuating	I oughtn't to have perpetuated
you oughtn't to have perpetuated
he oughtn't to have perpetuated
we oughtn't to have perpetuated
you oughtn't to have perpetuated
they oughtn't to have perpetuated	I oughtn't to have been perpetuating
you oughtn't to have been perpetuating
he oughtn't to have been perpetuating
we oughtn't to have been perpetuating
you oughtn't to have been perpetuating
they oughtn't to have been perpetuating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I perpetuate?
ought to you perpetuate?
ought to he perpetuate?
ought to we perpetuate?
ought to you perpetuate?
ought to they perpetuate? 	ought to I be perpetuating?
ought to you be perpetuating?
ought to he be perpetuating?
ought to we be perpetuating?
ought to you be perpetuating?
ought to they be perpetuating? 	ought to I have perpetuated?
ought to you have perpetuated?
ought to he have perpetuated?
ought to we have perpetuated?
ought to you have perpetuated?
ought to they have perpetuated? 	ought to I have been perpetuating?
ought to you have been perpetuating?
ought to he have been perpetuating?
ought to we have been perpetuating?
ought to you have been perpetuating?
ought to they have been perpetuating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to perpetuate?
oughtn't you to perpetuate?
oughtn't he to perpetuate?
oughtn't we to perpetuate?
oughtn't you to perpetuate?
oughtn't they to perpetuate? 	oughtn't I to be perpetuating?
oughtn't you to be perpetuating?
oughtn't he to be perpetuating?
oughtn't we to be perpetuating?
oughtn't you to be perpetuating?
oughtn't they to be perpetuating? 	oughtn't I to have perpetuated?
oughtn't you to have perpetuated?
oughtn't he to have perpetuated?
oughtn't we to have perpetuated?
oughtn't you to have perpetuated?
oughtn't they to have perpetuated? 	oughtn't I to have been perpetuating?
oughtn't you to have been perpetuating?
oughtn't he to have been perpetuating?
oughtn't we to have been perpetuating?
oughtn't you to have been perpetuating?
oughtn't they to have been perpetuating?