I may joke you may joke she may joke we may joke you may joke they may joke
V-ing form
I may be joking you may be joking she may be joking we may be joking you may be joking they may be joking
Perfect
I may have joked you may have joked she may have joked we may have joked you may have joked they may have joked
V-ing perfect
I may have been joking you may have been joking she may have been joking we may have been joking you may have been joking they may have been joking
Negation
Simple form
I may not joke you may not joke she may not joke we may not joke you may not joke they may not joke
V-ing form
I may not be joking you may not be joking she may not be joking we may not be joking you may not be joking they may not be joking
Perfect
I may not have joked you may not have joked she may not have joked we may not have joked you may not have joked they may not have joked
V-ing perfect
I may not have been joking you may not have been joking she may not have been joking we may not have been joking you may not have been joking they may not have been joking
Interrogative form
Simple form
may I joke? may you joke? may she joke? may we joke? may you joke? may they joke?
V-ing form
may I be joking? may you be joking? may she be joking? may we be joking? may you be joking? may they be joking?
Perfect
may I have joked? may you have joked? may she have joked? may we have joked? may you have joked? may they have joked?
V-ing perfect
may I have been joking? may you have been joking? may she have been joking? may we have been joking? may you have been joking? may they have been joking?
Interro-negative form
Simple form
may I not joke? may you not joke? may she not joke? may we not joke? may you not joke? may they not joke?
V-ing form
may I not be joking? may you not be joking? may she not be joking? may we not be joking? may you not be joking? may they not be joking?
Perfect
may I not have joked? may you not have joked? may she not have joked? may we not have joked? may you not have joked? may they not have joked?
V-ing perfect
may I not have been joking? may you not have been joking? may she not have been joking? may we not have been joking? may you not have been joking? may they not have been joking?