English verb conjugation
OUGHT TO CHECKER

Regular verb: checker - checkered - checkered

Affirmation

Simple form	V-ing form
I ought to checker you ought to checker he ought to checker we ought to checker you ought to checker they ought to checker	I ought to be checkering you ought to be checkering he ought to be checkering we ought to be checkering you ought to be checkering they ought to be checkering
Perfect	V-ing perfect
I ought to have checkered you ought to have checkered he ought to have checkered we ought to have checkered you ought to have checkered they ought to have checkered	I ought to have been checkering you ought to have been checkering he ought to have been checkering we ought to have been checkering you ought to have been checkering they ought to have been checkering

Negation

Simple form	V-ing form
I oughtn't to checker you oughtn't to checker he oughtn't to checker we oughtn't to checker you oughtn't to checker they oughtn't to checker	I oughtn't to be checkering you oughtn't to be checkering he oughtn't to be checkering we oughtn't to be checkering you oughtn't to be checkering they oughtn't to be checkering
Perfect	V-ing perfect
I oughtn't to have checkered you oughtn't to have checkered he oughtn't to have checkered we oughtn't to have checkered you oughtn't to have checkered they oughtn't to have checkered	I oughtn't to have been checkering you oughtn't to have been checkering he oughtn't to have been checkering we oughtn't to have been checkering you oughtn't to have been checkering they oughtn't to have been checkering

Interrogative form

Simple form	V-ing form
ought to I checker? ought to you checker? ought to he checker? ought to we checker? ought to you checker? ought to they checker?	ought to I be checkering? ought to you be checkering? ought to he be checkering? ought to we be checkering? ought to you be checkering? ought to they be checkering?
Perfect	V-ing perfect
ought to I have checkered? ought to you have checkered? ought to he have checkered? ought to we have checkered? ought to you have checkered? ought to they have checkered?	ought to I have been checkering? ought to you have been checkering? ought to he have been checkering? ought to we have been checkering? ought to you have been checkering? ought to they have been checkering?

Interro-negative form

Simple form	V-ing form
oughtn't I to checker? oughtn't you to checker? oughtn't he to checker? oughtn't we to checker? oughtn't you to checker? oughtn't they to checker?	oughtn't I to be checkering? oughtn't you to be checkering? oughtn't he to be checkering? oughtn't we to be checkering? oughtn't you to be checkering? oughtn't they to be checkering?
Perfect	V-ing perfect
oughtn't I to have checkered? oughtn't you to have checkered? oughtn't he to have checkered? oughtn't we to have checkered? oughtn't you to have checkered? oughtn't they to have checkered?	oughtn't I to have been checkering? oughtn't you to have been checkering? oughtn't he to have been checkering? oughtn't we to have been checkering? oughtn't you to have been checkering? oughtn't they to have been checkering?