English verb conjugation
OUGHT TO PREPLAN

Regular verb: preplan - preplaned - preplaned

Affirmation

Simple form	V-ing form
I ought to preplan you ought to preplan he ought to preplan we ought to preplan you ought to preplan they ought to preplan	I ought to be preplaning you ought to be preplaning he ought to be preplaning we ought to be preplaning you ought to be preplaning they ought to be preplaning
Perfect	V-ing perfect
I ought to have preplaned you ought to have preplaned he ought to have preplaned we ought to have preplaned you ought to have preplaned they ought to have preplaned	I ought to have been preplaning you ought to have been preplaning he ought to have been preplaning we ought to have been preplaning you ought to have been preplaning they ought to have been preplaning

Negation

Simple form	V-ing form
I oughtn't to preplan you oughtn't to preplan he oughtn't to preplan we oughtn't to preplan you oughtn't to preplan they oughtn't to preplan	I oughtn't to be preplaning you oughtn't to be preplaning he oughtn't to be preplaning we oughtn't to be preplaning you oughtn't to be preplaning they oughtn't to be preplaning
Perfect	V-ing perfect
I oughtn't to have preplaned you oughtn't to have preplaned he oughtn't to have preplaned we oughtn't to have preplaned you oughtn't to have preplaned they oughtn't to have preplaned	I oughtn't to have been preplaning you oughtn't to have been preplaning he oughtn't to have been preplaning we oughtn't to have been preplaning you oughtn't to have been preplaning they oughtn't to have been preplaning

Interrogative form

Simple form	V-ing form
ought to I preplan? ought to you preplan? ought to he preplan? ought to we preplan? ought to you preplan? ought to they preplan?	ought to I be preplaning? ought to you be preplaning? ought to he be preplaning? ought to we be preplaning? ought to you be preplaning? ought to they be preplaning?
Perfect	V-ing perfect
ought to I have preplaned? ought to you have preplaned? ought to he have preplaned? ought to we have preplaned? ought to you have preplaned? ought to they have preplaned?	ought to I have been preplaning? ought to you have been preplaning? ought to he have been preplaning? ought to we have been preplaning? ought to you have been preplaning? ought to they have been preplaning?

Interro-negative form

Simple form	V-ing form
oughtn't I to preplan? oughtn't you to preplan? oughtn't he to preplan? oughtn't we to preplan? oughtn't you to preplan? oughtn't they to preplan?	oughtn't I to be preplaning? oughtn't you to be preplaning? oughtn't he to be preplaning? oughtn't we to be preplaning? oughtn't you to be preplaning? oughtn't they to be preplaning?
Perfect	V-ing perfect
oughtn't I to have preplaned? oughtn't you to have preplaned? oughtn't he to have preplaned? oughtn't we to have preplaned? oughtn't you to have preplaned? oughtn't they to have preplaned?	oughtn't I to have been preplaning? oughtn't you to have been preplaning? oughtn't he to have been preplaning? oughtn't we to have been preplaning? oughtn't you to have been preplaning? oughtn't they to have been preplaning?