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 she 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 she 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 she 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 she 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 ought not to sum you ought not to sum she ought not to sum we ought not to sum you ought not to sum they ought not to sum	I ought not to summing you ought not to summing she ought not to summing we ought not to summing you ought not to summing they ought not to summing
Perfect	V-ing perfect
I ought not to have summed you ought not to have summed she ought not to have summed we ought not to have summed you ought not to have summed they ought not to have summed	I ought not to have been summing you ought not to have been summing she ought not to have been summing we ought not to have been summing you ought not to have been summing they ought not to have been summing

Interrogative form

Simple form	V-ing form
ought to I sum? ought to you sum? ought to she 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 she 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 she 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 she 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
ought I not to sum? ought you not to sum? ought she not to sum? ought we not to sum? ought you not to sum? ought they not to sum?	ought I not to be summing? ought you not to be summing? ought she not to be summing? ought we not to be summing? ought you not to be summing? ought they not to be summing?
Perfect	V-ing perfect
ought I not to have summed? ought you not to have summed? ought she not to have summed? ought we not to have summed? ought you not to have summed? ought they not to have summed?	ought I not to have been summing? ought you not to have been summing? ought she not to have been summing? ought we not to have been summing? ought you not to have been summing? ought they not to have been summing?