ought to concede
Regular verb: concede - conceded- conceded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to concede
you ought to concede
he ought to concede
we ought to concede
you ought to concede
they ought to concede 	I ought to be conceding
you ought to be conceding
he ought to be conceding
we ought to be conceding
you ought to be conceding
they ought to be conceding	I ought to have conceded
you ought to have conceded
he ought to have conceded
we ought to have conceded
you ought to have conceded
they ought to have conceded	I ought to have been conceding
you ought to have been conceding
he ought to have been conceding
we ought to have been conceding
you ought to have been conceding
they ought to have been conceding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to concede
you oughtn't to concede
he oughtn't to concede
we oughtn't to concede
you oughtn't to concede
they oughtn't to concede 	I oughtn't to be conceding
you oughtn't to be conceding
he oughtn't to be conceding
we oughtn't to be conceding
you oughtn't to be conceding
they oughtn't to be conceding	I oughtn't to have conceded
you oughtn't to have conceded
he oughtn't to have conceded
we oughtn't to have conceded
you oughtn't to have conceded
they oughtn't to have conceded	I oughtn't to have been conceding
you oughtn't to have been conceding
he oughtn't to have been conceding
we oughtn't to have been conceding
you oughtn't to have been conceding
they oughtn't to have been conceding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I concede?
ought to you concede?
ought to he concede?
ought to we concede?
ought to you concede?
ought to they concede? 	ought to I be conceding?
ought to you be conceding?
ought to he be conceding?
ought to we be conceding?
ought to you be conceding?
ought to they be conceding? 	ought to I have conceded?
ought to you have conceded?
ought to he have conceded?
ought to we have conceded?
ought to you have conceded?
ought to they have conceded? 	ought to I have been conceding?
ought to you have been conceding?
ought to he have been conceding?
ought to we have been conceding?
ought to you have been conceding?
ought to they have been conceding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to concede?
oughtn't you to concede?
oughtn't he to concede?
oughtn't we to concede?
oughtn't you to concede?
oughtn't they to concede? 	oughtn't I to be conceding?
oughtn't you to be conceding?
oughtn't he to be conceding?
oughtn't we to be conceding?
oughtn't you to be conceding?
oughtn't they to be conceding? 	oughtn't I to have conceded?
oughtn't you to have conceded?
oughtn't he to have conceded?
oughtn't we to have conceded?
oughtn't you to have conceded?
oughtn't they to have conceded? 	oughtn't I to have been conceding?
oughtn't you to have been conceding?
oughtn't he to have been conceding?
oughtn't we to have been conceding?
oughtn't you to have been conceding?
oughtn't they to have been conceding?