I may chap you may chap she may chap we may chap you may chap they may chap
V-ing form
I may be chapping you may be chapping she may be chapping we may be chapping you may be chapping they may be chapping
Perfect
I may have chapped you may have chapped she may have chapped we may have chapped you may have chapped they may have chapped
V-ing perfect
I may have been chapping you may have been chapping she may have been chapping we may have been chapping you may have been chapping they may have been chapping
Negation
Simple form
I may not chap you may not chap she may not chap we may not chap you may not chap they may not chap
V-ing form
I may not be chapping you may not be chapping she may not be chapping we may not be chapping you may not be chapping they may not be chapping
Perfect
I may not have chapped you may not have chapped she may not have chapped we may not have chapped you may not have chapped they may not have chapped
V-ing perfect
I may not have been chapping you may not have been chapping she may not have been chapping we may not have been chapping you may not have been chapping they may not have been chapping
Interrogative form
Simple form
may I chap? may you chap? may she chap? may we chap? may you chap? may they chap?
V-ing form
may I be chapping? may you be chapping? may she be chapping? may we be chapping? may you be chapping? may they be chapping?
Perfect
may I have chapped? may you have chapped? may she have chapped? may we have chapped? may you have chapped? may they have chapped?
V-ing perfect
may I have been chapping? may you have been chapping? may she have been chapping? may we have been chapping? may you have been chapping? may they have been chapping?
Interro-negative form
Simple form
may I not chap? may you not chap? may she not chap? may we not chap? may you not chap? may they not chap?
V-ing form
may I not be chapping? may you not be chapping? may she not be chapping? may we not be chapping? may you not be chapping? may they not be chapping?
Perfect
may I not have chapped? may you not have chapped? may she not have chapped? may we not have chapped? may you not have chapped? may they not have chapped?
V-ing perfect
may I not have been chapping? may you not have been chapping? may she not have been chapping? may we not have been chapping? may you not have been chapping? may they not have been chapping?