I may staple you may staple he may staple we may staple you may staple they may staple
V-ing form
I may be stapling you may be stapling he may be stapling we may be stapling you may be stapling they may be stapling
Perfect
I may have stapled you may have stapled he may have stapled we may have stapled you may have stapled they may have stapled
V-ing perfect
I may have been stapling you may have been stapling he may have been stapling we may have been stapling you may have been stapling they may have been stapling
Negation
Simple form
I may not staple you may not staple he may not staple we may not staple you may not staple they may not staple
V-ing form
I may not be stapling you may not be stapling he may not be stapling we may not be stapling you may not be stapling they may not be stapling
Perfect
I may not have stapled you may not have stapled he may not have stapled we may not have stapled you may not have stapled they may not have stapled
V-ing perfect
I may not have been stapling you may not have been stapling he may not have been stapling we may not have been stapling you may not have been stapling they may not have been stapling
Interrogative form
Simple form
may I staple? may you staple? may he staple? may we staple? may you staple? may they staple?
V-ing form
may I be stapling? may you be stapling? may he be stapling? may we be stapling? may you be stapling? may they be stapling?
Perfect
may I have stapled? may you have stapled? may he have stapled? may we have stapled? may you have stapled? may they have stapled?
V-ing perfect
may I have been stapling? may you have been stapling? may he have been stapling? may we have been stapling? may you have been stapling? may they have been stapling?
Interro-negative form
Simple form
may I not staple? may you not staple? may he not staple? may we not staple? may you not staple? may they not staple?
V-ing form
may I not be stapling? may you not be stapling? may he not be stapling? may we not be stapling? may you not be stapling? may they not be stapling?
Perfect
may I not have stapled? may you not have stapled? may he not have stapled? may we not have stapled? may you not have stapled? may they not have stapled?
V-ing perfect
may I not have been stapling? may you not have been stapling? may he not have been stapling? may we not have been stapling? may you not have been stapling? may they not have been stapling?