ought to prolongate
Regular verb: prolongate - prolongated- prolongated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to prolongate
you ought to prolongate
she ought to prolongate
we ought to prolongate
you ought to prolongate
they ought to prolongate 	I ought to be prolongating
you ought to be prolongating
she ought to be prolongating
we ought to be prolongating
you ought to be prolongating
they ought to be prolongating	I ought to have prolongated
you ought to have prolongated
she ought to have prolongated
we ought to have prolongated
you ought to have prolongated
they ought to have prolongated	I ought to have been prolongating
you ought to have been prolongating
she ought to have been prolongating
we ought to have been prolongating
you ought to have been prolongating
they ought to have been prolongating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to prolongate
you oughtn't to prolongate
she oughtn't to prolongate
we oughtn't to prolongate
you oughtn't to prolongate
they oughtn't to prolongate 	I oughtn't to be prolongating
you oughtn't to be prolongating
she oughtn't to be prolongating
we oughtn't to be prolongating
you oughtn't to be prolongating
they oughtn't to be prolongating	I oughtn't to have prolongated
you oughtn't to have prolongated
she oughtn't to have prolongated
we oughtn't to have prolongated
you oughtn't to have prolongated
they oughtn't to have prolongated	I oughtn't to have been prolongating
you oughtn't to have been prolongating
she oughtn't to have been prolongating
we oughtn't to have been prolongating
you oughtn't to have been prolongating
they oughtn't to have been prolongating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I prolongate?
ought to you prolongate?
ought to she prolongate?
ought to we prolongate?
ought to you prolongate?
ought to they prolongate? 	ought to I be prolongating?
ought to you be prolongating?
ought to she be prolongating?
ought to we be prolongating?
ought to you be prolongating?
ought to they be prolongating? 	ought to I have prolongated?
ought to you have prolongated?
ought to she have prolongated?
ought to we have prolongated?
ought to you have prolongated?
ought to they have prolongated? 	ought to I have been prolongating?
ought to you have been prolongating?
ought to she have been prolongating?
ought to we have been prolongating?
ought to you have been prolongating?
ought to they have been prolongating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to prolongate?
oughtn't you to prolongate?
oughtn't she to prolongate?
oughtn't we to prolongate?
oughtn't you to prolongate?
oughtn't they to prolongate? 	oughtn't I to be prolongating?
oughtn't you to be prolongating?
oughtn't she to be prolongating?
oughtn't we to be prolongating?
oughtn't you to be prolongating?
oughtn't they to be prolongating? 	oughtn't I to have prolongated?
oughtn't you to have prolongated?
oughtn't she to have prolongated?
oughtn't we to have prolongated?
oughtn't you to have prolongated?
oughtn't they to have prolongated? 	oughtn't I to have been prolongating?
oughtn't you to have been prolongating?
oughtn't she to have been prolongating?
oughtn't we to have been prolongating?
oughtn't you to have been prolongating?
oughtn't they to have been prolongating?