English verb conjugation
MAY PREPURCHASE

Regular verb: prepurchase - prepurchased - prepurchased

Affirmation

Simple form	V-ing form
I may prepurchase you may prepurchase she may prepurchase we may prepurchase you may prepurchase they may prepurchase	I may be prepurchasing you may be prepurchasing she may be prepurchasing we may be prepurchasing you may be prepurchasing they may be prepurchasing
Perfect	V-ing perfect
I may have prepurchased you may have prepurchased she may have prepurchased we may have prepurchased you may have prepurchased they may have prepurchased	I may have been prepurchasing you may have been prepurchasing she may have been prepurchasing we may have been prepurchasing you may have been prepurchasing they may have been prepurchasing

Negation

Simple form	V-ing form
I mayn't prepurchase you mayn't prepurchase she mayn't prepurchase we mayn't prepurchase you mayn't prepurchase they mayn't prepurchase	I mayn't be prepurchasing you mayn't be prepurchasing she mayn't be prepurchasing we mayn't be prepurchasing you mayn't be prepurchasing they mayn't be prepurchasing
Perfect	V-ing perfect
I mayn't have prepurchased you mayn't have prepurchased she mayn't have prepurchased we mayn't have prepurchased you mayn't have prepurchased they mayn't have prepurchased	I mayn't have been prepurchasing you mayn't have been prepurchasing she mayn't have been prepurchasing we mayn't have been prepurchasing you mayn't have been prepurchasing they mayn't have been prepurchasing

Interrogative form

Simple form	V-ing form
may I prepurchase? may you prepurchase? may she prepurchase? may we prepurchase? may you prepurchase? may they prepurchase?	may I be prepurchasing? may you be prepurchasing? may she be prepurchasing? may we be prepurchasing? may you be prepurchasing? may they be prepurchasing?
Perfect	V-ing perfect
may I have prepurchased? may you have prepurchased? may she have prepurchased? may we have prepurchased? may you have prepurchased? may they have prepurchased?	may I have been prepurchasing? may you have been prepurchasing? may she have been prepurchasing? may we have been prepurchasing? may you have been prepurchasing? may they have been prepurchasing?

Interro-negative form

Simple form	V-ing form
mayn't I prepurchase? mayn't you prepurchase? mayn't she prepurchase? mayn't we prepurchase? mayn't you prepurchase? mayn't they prepurchase?	mayn't I be prepurchasing? mayn't you be prepurchasing? mayn't she be prepurchasing? mayn't we be prepurchasing? mayn't you be prepurchasing? mayn't they be prepurchasing?
Perfect	V-ing perfect
mayn't I have prepurchased? mayn't you have prepurchased? mayn't she have prepurchased? mayn't we have prepurchased? mayn't you have prepurchased? mayn't they have prepurchased?	mayn't I have been prepurchasing? mayn't you have been prepurchasing? mayn't she have been prepurchasing? mayn't we have been prepurchasing? mayn't you have been prepurchasing? mayn't they have been prepurchasing?