English verb conjugation
SHOULD BUY

Irregular verb: buy - bought - bought

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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