I may walk you may walk she may walk we may walk you may walk they may walk
V-ing form
I may be walking you may be walking she may be walking we may be walking you may be walking they may be walking
Perfect
I may have walked you may have walked she may have walked we may have walked you may have walked they may have walked
V-ing perfect
I may have been walking you may have been walking she may have been walking we may have been walking you may have been walking they may have been walking
Negation
Simple form
I may not walk you may not walk she may not walk we may not walk you may not walk they may not walk
V-ing form
I may not be walking you may not be walking she may not be walking we may not be walking you may not be walking they may not be walking
Perfect
I may not have walked you may not have walked she may not have walked we may not have walked you may not have walked they may not have walked
V-ing perfect
I may not have been walking you may not have been walking she may not have been walking we may not have been walking you may not have been walking they may not have been walking
Interrogative form
Simple form
may I walk? may you walk? may she walk? may we walk? may you walk? may they walk?
V-ing form
may I be walking? may you be walking? may she be walking? may we be walking? may you be walking? may they be walking?
Perfect
may I have walked? may you have walked? may she have walked? may we have walked? may you have walked? may they have walked?
V-ing perfect
may I have been walking? may you have been walking? may she have been walking? may we have been walking? may you have been walking? may they have been walking?
Interro-negative form
Simple form
may I not walk? may you not walk? may she not walk? may we not walk? may you not walk? may they not walk?
V-ing form
may I not be walking? may you not be walking? may she not be walking? may we not be walking? may you not be walking? may they not be walking?
Perfect
may I not have walked? may you not have walked? may she not have walked? may we not have walked? may you not have walked? may they not have walked?
V-ing perfect
may I not have been walking? may you not have been walking? may she not have been walking? may we not have been walking? may you not have been walking? may they not have been walking?