ought to oppugn
Regular verb: oppugn - oppugned- oppugned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to oppugn
you ought to oppugn
he ought to oppugn
we ought to oppugn
you ought to oppugn
they ought to oppugn 	I ought to be oppugning
you ought to be oppugning
he ought to be oppugning
we ought to be oppugning
you ought to be oppugning
they ought to be oppugning	I ought to have oppugned
you ought to have oppugned
he ought to have oppugned
we ought to have oppugned
you ought to have oppugned
they ought to have oppugned	I ought to have been oppugning
you ought to have been oppugning
he ought to have been oppugning
we ought to have been oppugning
you ought to have been oppugning
they ought to have been oppugning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to oppugn
you oughtn't to oppugn
he oughtn't to oppugn
we oughtn't to oppugn
you oughtn't to oppugn
they oughtn't to oppugn 	I oughtn't to be oppugning
you oughtn't to be oppugning
he oughtn't to be oppugning
we oughtn't to be oppugning
you oughtn't to be oppugning
they oughtn't to be oppugning	I oughtn't to have oppugned
you oughtn't to have oppugned
he oughtn't to have oppugned
we oughtn't to have oppugned
you oughtn't to have oppugned
they oughtn't to have oppugned	I oughtn't to have been oppugning
you oughtn't to have been oppugning
he oughtn't to have been oppugning
we oughtn't to have been oppugning
you oughtn't to have been oppugning
they oughtn't to have been oppugning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I oppugn?
ought to you oppugn?
ought to he oppugn?
ought to we oppugn?
ought to you oppugn?
ought to they oppugn? 	ought to I be oppugning?
ought to you be oppugning?
ought to he be oppugning?
ought to we be oppugning?
ought to you be oppugning?
ought to they be oppugning? 	ought to I have oppugned?
ought to you have oppugned?
ought to he have oppugned?
ought to we have oppugned?
ought to you have oppugned?
ought to they have oppugned? 	ought to I have been oppugning?
ought to you have been oppugning?
ought to he have been oppugning?
ought to we have been oppugning?
ought to you have been oppugning?
ought to they have been oppugning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to oppugn?
oughtn't you to oppugn?
oughtn't he to oppugn?
oughtn't we to oppugn?
oughtn't you to oppugn?
oughtn't they to oppugn? 	oughtn't I to be oppugning?
oughtn't you to be oppugning?
oughtn't he to be oppugning?
oughtn't we to be oppugning?
oughtn't you to be oppugning?
oughtn't they to be oppugning? 	oughtn't I to have oppugned?
oughtn't you to have oppugned?
oughtn't he to have oppugned?
oughtn't we to have oppugned?
oughtn't you to have oppugned?
oughtn't they to have oppugned? 	oughtn't I to have been oppugning?
oughtn't you to have been oppugning?
oughtn't he to have been oppugning?
oughtn't we to have been oppugning?
oughtn't you to have been oppugning?
oughtn't they to have been oppugning?