English verb conjugation
OUGHT TO BUY

Irregular verb: buy - bought - bought

Affirmation

Simple form	V-ing form
I ought to buy you ought to buy he ought to buy we ought to buy you ought to buy they ought to buy	I ought to be buying you ought to be buying he ought to be buying we ought to be buying you ought to be buying they ought to be buying
Perfect	V-ing perfect
I ought to have bought you ought to have bought he ought to have bought we ought to have bought you ought to have bought they ought to have bought	I ought to have been buying you ought to have been buying he ought to have been buying we ought to have been buying you ought to have been buying they ought to have been buying

Negation

Simple form	V-ing form
I ought not to buy you ought not to buy he ought not to buy we ought not to buy you ought not to buy they ought not to buy	I ought not to buying you ought not to buying he ought not to buying we ought not to buying you ought not to buying they ought not to buying
Perfect	V-ing perfect
I ought not to have bought you ought not to have bought he ought not to have bought we ought not to have bought you ought not to have bought they ought not to have bought	I ought not to have been buying you ought not to have been buying he ought not to have been buying we ought not to have been buying you ought not to have been buying they ought not to have been buying

Interrogative form

Simple form	V-ing form
ought to I buy? ought to you buy? ought to he buy? ought to we buy? ought to you buy? ought to they buy?	ought to I be buying? ought to you be buying? ought to he be buying? ought to we be buying? ought to you be buying? ought to they be buying?
Perfect	V-ing perfect
ought to I have bought? ought to you have bought? ought to he have bought? ought to we have bought? ought to you have bought? ought to they have bought?	ought to I have been buying? ought to you have been buying? ought to he have been buying? ought to we have been buying? ought to you have been buying? ought to they have been buying?

Interro-negative form

Simple form	V-ing form
ought I not to buy? ought you not to buy? ought he not to buy? ought we not to buy? ought you not to buy? ought they not to buy?	ought I not to be buying? ought you not to be buying? ought he not to be buying? ought we not to be buying? ought you not to be buying? ought they not to be buying?
Perfect	V-ing perfect
ought I not to have bought? ought you not to have bought? ought he not to have bought? ought we not to have bought? ought you not to have bought? ought they not to have bought?	ought I not to have been buying? ought you not to have been buying? ought he not to have been buying? ought we not to have been buying? ought you not to have been buying? ought they not to have been buying?