English verb conjugation
MAY BUY

Irregular verb: buy - bought - bought

Affirmation

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

Negation

Simple form	V-ing form
I mayn't buy you mayn't buy he mayn't buy we mayn't buy you mayn't buy they mayn't buy	I mayn't be buying you mayn't be buying he mayn't be buying we mayn't be buying you mayn't be buying they mayn't be buying
Perfect	V-ing perfect
I mayn't have bought you mayn't have bought he mayn't have bought we mayn't have bought you mayn't have bought they mayn't have bought	I mayn't have been buying you mayn't have been buying he mayn't have been buying we mayn't have been buying you mayn't have been buying they mayn't have been buying

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mayn't I buy? mayn't you buy? mayn't he buy? mayn't we buy? mayn't you buy? mayn't they buy?	mayn't I be buying? mayn't you be buying? mayn't he be buying? mayn't we be buying? mayn't you be buying? mayn't they be buying?
Perfect	V-ing perfect
mayn't I have bought? mayn't you have bought? mayn't he have bought? mayn't we have bought? mayn't you have bought? mayn't they have bought?	mayn't I have been buying? mayn't you have been buying? mayn't he have been buying? mayn't we have been buying? mayn't you have been buying? mayn't they have been buying?