I may joke you may joke he may joke we may joke you may joke they may joke
V-ing form
I may be joking you may be joking he may be joking we may be joking you may be joking they may be joking
Perfect
I may have joked you may have joked he 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 he may have been joking we may have been joking you may have been joking they may have been joking
Negation
Simple form
I mayn't joke you mayn't joke he mayn't joke we mayn't joke you mayn't joke they mayn't joke
V-ing form
I mayn't be joking you mayn't be joking he mayn't be joking we mayn't be joking you mayn't be joking they mayn't be joking
Perfect
I mayn't have joked you mayn't have joked he mayn't have joked we mayn't have joked you mayn't have joked they mayn't have joked
V-ing perfect
I mayn't have been joking you mayn't have been joking he mayn't have been joking we mayn't have been joking you mayn't have been joking they mayn't have been joking
Interrogative form
Simple form
may I joke? may you joke? may he joke? may we joke? may you joke? may they joke?
V-ing form
may I be joking? may you be joking? may he be joking? may we be joking? may you be joking? may they be joking?
Perfect
may I have joked? may you have joked? may he 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 he have been joking? may we have been joking? may you have been joking? may they have been joking?
Interro-negative form
Simple form
mayn't I joke? mayn't you joke? mayn't he joke? mayn't we joke? mayn't you joke? mayn't they joke?
V-ing form
mayn't I be joking? mayn't you be joking? mayn't he be joking? mayn't we be joking? mayn't you be joking? mayn't they be joking?
Perfect
mayn't I have joked? mayn't you have joked? mayn't he have joked? mayn't we have joked? mayn't you have joked? mayn't they have joked?
V-ing perfect
mayn't I have been joking? mayn't you have been joking? mayn't he have been joking? mayn't we have been joking? mayn't you have been joking? mayn't they have been joking?