English verb conjugation
OUGHT TO SUM

Regular verb: sum - summed - summed

Affirmation

Simple form	V-ing form
I ought to sum you ought to sum he ought to sum we ought to sum you ought to sum they ought to sum	I ought to be summing you ought to be summing he ought to be summing we ought to be summing you ought to be summing they ought to be summing
Perfect	V-ing perfect
I ought to have summed you ought to have summed he ought to have summed we ought to have summed you ought to have summed they ought to have summed	I ought to have been summing you ought to have been summing he ought to have been summing we ought to have been summing you ought to have been summing they ought to have been summing

Negation

Simple form	V-ing form
I oughtn't to sum you oughtn't to sum he oughtn't to sum we oughtn't to sum you oughtn't to sum they oughtn't to sum	I oughtn't to be summing you oughtn't to be summing he oughtn't to be summing we oughtn't to be summing you oughtn't to be summing they oughtn't to be summing
Perfect	V-ing perfect
I oughtn't to have summed you oughtn't to have summed he oughtn't to have summed we oughtn't to have summed you oughtn't to have summed they oughtn't to have summed	I oughtn't to have been summing you oughtn't to have been summing he oughtn't to have been summing we oughtn't to have been summing you oughtn't to have been summing they oughtn't to have been summing

Interrogative form

Simple form	V-ing form
ought to I sum? ought to you sum? ought to he sum? ought to we sum? ought to you sum? ought to they sum?	ought to I be summing? ought to you be summing? ought to he be summing? ought to we be summing? ought to you be summing? ought to they be summing?
Perfect	V-ing perfect
ought to I have summed? ought to you have summed? ought to he have summed? ought to we have summed? ought to you have summed? ought to they have summed?	ought to I have been summing? ought to you have been summing? ought to he have been summing? ought to we have been summing? ought to you have been summing? ought to they have been summing?

Interro-negative form

Simple form	V-ing form
oughtn't I to sum? oughtn't you to sum? oughtn't he to sum? oughtn't we to sum? oughtn't you to sum? oughtn't they to sum?	oughtn't I to be summing? oughtn't you to be summing? oughtn't he to be summing? oughtn't we to be summing? oughtn't you to be summing? oughtn't they to be summing?
Perfect	V-ing perfect
oughtn't I to have summed? oughtn't you to have summed? oughtn't he to have summed? oughtn't we to have summed? oughtn't you to have summed? oughtn't they to have summed?	oughtn't I to have been summing? oughtn't you to have been summing? oughtn't he to have been summing? oughtn't we to have been summing? oughtn't you to have been summing? oughtn't they to have been summing?