English verb conjugation
OUGHT TO INVENT

Regular verb: invent - invented - invented

Affirmation

Simple form	V-ing form
I ought to invent you ought to invent he ought to invent we ought to invent you ought to invent they ought to invent	I ought to be inventing you ought to be inventing he ought to be inventing we ought to be inventing you ought to be inventing they ought to be inventing
Perfect	V-ing perfect
I ought to have invented you ought to have invented he ought to have invented we ought to have invented you ought to have invented they ought to have invented	I ought to have been inventing you ought to have been inventing he ought to have been inventing we ought to have been inventing you ought to have been inventing they ought to have been inventing

Negation

Simple form	V-ing form
I oughtn't to invent you oughtn't to invent he oughtn't to invent we oughtn't to invent you oughtn't to invent they oughtn't to invent	I oughtn't to be inventing you oughtn't to be inventing he oughtn't to be inventing we oughtn't to be inventing you oughtn't to be inventing they oughtn't to be inventing
Perfect	V-ing perfect
I oughtn't to have invented you oughtn't to have invented he oughtn't to have invented we oughtn't to have invented you oughtn't to have invented they oughtn't to have invented	I oughtn't to have been inventing you oughtn't to have been inventing he oughtn't to have been inventing we oughtn't to have been inventing you oughtn't to have been inventing they oughtn't to have been inventing

Interrogative form

Simple form	V-ing form
ought to I invent? ought to you invent? ought to he invent? ought to we invent? ought to you invent? ought to they invent?	ought to I be inventing? ought to you be inventing? ought to he be inventing? ought to we be inventing? ought to you be inventing? ought to they be inventing?
Perfect	V-ing perfect
ought to I have invented? ought to you have invented? ought to he have invented? ought to we have invented? ought to you have invented? ought to they have invented?	ought to I have been inventing? ought to you have been inventing? ought to he have been inventing? ought to we have been inventing? ought to you have been inventing? ought to they have been inventing?

Interro-negative form

Simple form	V-ing form
oughtn't I to invent? oughtn't you to invent? oughtn't he to invent? oughtn't we to invent? oughtn't you to invent? oughtn't they to invent?	oughtn't I to be inventing? oughtn't you to be inventing? oughtn't he to be inventing? oughtn't we to be inventing? oughtn't you to be inventing? oughtn't they to be inventing?
Perfect	V-ing perfect
oughtn't I to have invented? oughtn't you to have invented? oughtn't he to have invented? oughtn't we to have invented? oughtn't you to have invented? oughtn't they to have invented?	oughtn't I to have been inventing? oughtn't you to have been inventing? oughtn't he to have been inventing? oughtn't we to have been inventing? oughtn't you to have been inventing? oughtn't they to have been inventing?