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