ought to enlighten
Regular verb: enlighten - enlightened- enlightened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to enlighten
you ought to enlighten
he ought to enlighten
we ought to enlighten
you ought to enlighten
they ought to enlighten 	I ought to be enlightening
you ought to be enlightening
he ought to be enlightening
we ought to be enlightening
you ought to be enlightening
they ought to be enlightening	I ought to have enlightened
you ought to have enlightened
he ought to have enlightened
we ought to have enlightened
you ought to have enlightened
they ought to have enlightened	I ought to have been enlightening
you ought to have been enlightening
he ought to have been enlightening
we ought to have been enlightening
you ought to have been enlightening
they ought to have been enlightening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to enlighten
you oughtn't to enlighten
he oughtn't to enlighten
we oughtn't to enlighten
you oughtn't to enlighten
they oughtn't to enlighten 	I oughtn't to be enlightening
you oughtn't to be enlightening
he oughtn't to be enlightening
we oughtn't to be enlightening
you oughtn't to be enlightening
they oughtn't to be enlightening	I oughtn't to have enlightened
you oughtn't to have enlightened
he oughtn't to have enlightened
we oughtn't to have enlightened
you oughtn't to have enlightened
they oughtn't to have enlightened	I oughtn't to have been enlightening
you oughtn't to have been enlightening
he oughtn't to have been enlightening
we oughtn't to have been enlightening
you oughtn't to have been enlightening
they oughtn't to have been enlightening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I enlighten?
ought to you enlighten?
ought to he enlighten?
ought to we enlighten?
ought to you enlighten?
ought to they enlighten? 	ought to I be enlightening?
ought to you be enlightening?
ought to he be enlightening?
ought to we be enlightening?
ought to you be enlightening?
ought to they be enlightening? 	ought to I have enlightened?
ought to you have enlightened?
ought to he have enlightened?
ought to we have enlightened?
ought to you have enlightened?
ought to they have enlightened? 	ought to I have been enlightening?
ought to you have been enlightening?
ought to he have been enlightening?
ought to we have been enlightening?
ought to you have been enlightening?
ought to they have been enlightening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to enlighten?
oughtn't you to enlighten?
oughtn't he to enlighten?
oughtn't we to enlighten?
oughtn't you to enlighten?
oughtn't they to enlighten? 	oughtn't I to be enlightening?
oughtn't you to be enlightening?
oughtn't he to be enlightening?
oughtn't we to be enlightening?
oughtn't you to be enlightening?
oughtn't they to be enlightening? 	oughtn't I to have enlightened?
oughtn't you to have enlightened?
oughtn't he to have enlightened?
oughtn't we to have enlightened?
oughtn't you to have enlightened?
oughtn't they to have enlightened? 	oughtn't I to have been enlightening?
oughtn't you to have been enlightening?
oughtn't he to have been enlightening?
oughtn't we to have been enlightening?
oughtn't you to have been enlightening?
oughtn't they to have been enlightening?