ought to retrograde
Regular verb: retrograde - retrograded- retrograded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to retrograde
you ought to retrograde
he ought to retrograde
we ought to retrograde
you ought to retrograde
they ought to retrograde 	I ought to be retrograding
you ought to be retrograding
he ought to be retrograding
we ought to be retrograding
you ought to be retrograding
they ought to be retrograding	I ought to have retrograded
you ought to have retrograded
he ought to have retrograded
we ought to have retrograded
you ought to have retrograded
they ought to have retrograded	I ought to have been retrograding
you ought to have been retrograding
he ought to have been retrograding
we ought to have been retrograding
you ought to have been retrograding
they ought to have been retrograding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to retrograde
you oughtn't to retrograde
he oughtn't to retrograde
we oughtn't to retrograde
you oughtn't to retrograde
they oughtn't to retrograde 	I oughtn't to be retrograding
you oughtn't to be retrograding
he oughtn't to be retrograding
we oughtn't to be retrograding
you oughtn't to be retrograding
they oughtn't to be retrograding	I oughtn't to have retrograded
you oughtn't to have retrograded
he oughtn't to have retrograded
we oughtn't to have retrograded
you oughtn't to have retrograded
they oughtn't to have retrograded	I oughtn't to have been retrograding
you oughtn't to have been retrograding
he oughtn't to have been retrograding
we oughtn't to have been retrograding
you oughtn't to have been retrograding
they oughtn't to have been retrograding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I retrograde?
ought to you retrograde?
ought to he retrograde?
ought to we retrograde?
ought to you retrograde?
ought to they retrograde? 	ought to I be retrograding?
ought to you be retrograding?
ought to he be retrograding?
ought to we be retrograding?
ought to you be retrograding?
ought to they be retrograding? 	ought to I have retrograded?
ought to you have retrograded?
ought to he have retrograded?
ought to we have retrograded?
ought to you have retrograded?
ought to they have retrograded? 	ought to I have been retrograding?
ought to you have been retrograding?
ought to he have been retrograding?
ought to we have been retrograding?
ought to you have been retrograding?
ought to they have been retrograding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to retrograde?
oughtn't you to retrograde?
oughtn't he to retrograde?
oughtn't we to retrograde?
oughtn't you to retrograde?
oughtn't they to retrograde? 	oughtn't I to be retrograding?
oughtn't you to be retrograding?
oughtn't he to be retrograding?
oughtn't we to be retrograding?
oughtn't you to be retrograding?
oughtn't they to be retrograding? 	oughtn't I to have retrograded?
oughtn't you to have retrograded?
oughtn't he to have retrograded?
oughtn't we to have retrograded?
oughtn't you to have retrograded?
oughtn't they to have retrograded? 	oughtn't I to have been retrograding?
oughtn't you to have been retrograding?
oughtn't he to have been retrograding?
oughtn't we to have been retrograding?
oughtn't you to have been retrograding?
oughtn't they to have been retrograding?