English verb conjugation
OUGHT TO THINK

Irregular verb: think - thought - thought

Affirmation

Simple form	V-ing form
I ought to think you ought to think he ought to think we ought to think you ought to think they ought to think	I ought to be thinking you ought to be thinking he ought to be thinking we ought to be thinking you ought to be thinking they ought to be thinking
Perfect	V-ing perfect
I ought to have thought you ought to have thought he ought to have thought we ought to have thought you ought to have thought they ought to have thought	I ought to have been thinking you ought to have been thinking he ought to have been thinking we ought to have been thinking you ought to have been thinking they ought to have been thinking

Negation

Simple form	V-ing form
I oughtn't to think you oughtn't to think he oughtn't to think we oughtn't to think you oughtn't to think they oughtn't to think	I oughtn't to be thinking you oughtn't to be thinking he oughtn't to be thinking we oughtn't to be thinking you oughtn't to be thinking they oughtn't to be thinking
Perfect	V-ing perfect
I oughtn't to have thought you oughtn't to have thought he oughtn't to have thought we oughtn't to have thought you oughtn't to have thought they oughtn't to have thought	I oughtn't to have been thinking you oughtn't to have been thinking he oughtn't to have been thinking we oughtn't to have been thinking you oughtn't to have been thinking they oughtn't to have been thinking

Interrogative form

Simple form	V-ing form
ought to I think? ought to you think? ought to he think? ought to we think? ought to you think? ought to they think?	ought to I be thinking? ought to you be thinking? ought to he be thinking? ought to we be thinking? ought to you be thinking? ought to they be thinking?
Perfect	V-ing perfect
ought to I have thought? ought to you have thought? ought to he have thought? ought to we have thought? ought to you have thought? ought to they have thought?	ought to I have been thinking? ought to you have been thinking? ought to he have been thinking? ought to we have been thinking? ought to you have been thinking? ought to they have been thinking?

Interro-negative form

Simple form	V-ing form
oughtn't I to think? oughtn't you to think? oughtn't he to think? oughtn't we to think? oughtn't you to think? oughtn't they to think?	oughtn't I to be thinking? oughtn't you to be thinking? oughtn't he to be thinking? oughtn't we to be thinking? oughtn't you to be thinking? oughtn't they to be thinking?
Perfect	V-ing perfect
oughtn't I to have thought? oughtn't you to have thought? oughtn't he to have thought? oughtn't we to have thought? oughtn't you to have thought? oughtn't they to have thought?	oughtn't I to have been thinking? oughtn't you to have been thinking? oughtn't he to have been thinking? oughtn't we to have been thinking? oughtn't you to have been thinking? oughtn't they to have been thinking?