I may ump you may ump she may ump we may ump you may ump they may ump
V-ing form
I may be umping you may be umping she may be umping we may be umping you may be umping they may be umping
Perfect
I may have umped you may have umped she may have umped we may have umped you may have umped they may have umped
V-ing perfect
I may have been umping you may have been umping she may have been umping we may have been umping you may have been umping they may have been umping
Negation
Simple form
I mayn't ump you mayn't ump she mayn't ump we mayn't ump you mayn't ump they mayn't ump
V-ing form
I mayn't be umping you mayn't be umping she mayn't be umping we mayn't be umping you mayn't be umping they mayn't be umping
Perfect
I mayn't have umped you mayn't have umped she mayn't have umped we mayn't have umped you mayn't have umped they mayn't have umped
V-ing perfect
I mayn't have been umping you mayn't have been umping she mayn't have been umping we mayn't have been umping you mayn't have been umping they mayn't have been umping
Interrogative form
Simple form
may I ump? may you ump? may she ump? may we ump? may you ump? may they ump?
V-ing form
may I be umping? may you be umping? may she be umping? may we be umping? may you be umping? may they be umping?
Perfect
may I have umped? may you have umped? may she have umped? may we have umped? may you have umped? may they have umped?
V-ing perfect
may I have been umping? may you have been umping? may she have been umping? may we have been umping? may you have been umping? may they have been umping?
Interro-negative form
Simple form
mayn't I ump? mayn't you ump? mayn't she ump? mayn't we ump? mayn't you ump? mayn't they ump?
V-ing form
mayn't I be umping? mayn't you be umping? mayn't she be umping? mayn't we be umping? mayn't you be umping? mayn't they be umping?
Perfect
mayn't I have umped? mayn't you have umped? mayn't she have umped? mayn't we have umped? mayn't you have umped? mayn't they have umped?
V-ing perfect
mayn't I have been umping? mayn't you have been umping? mayn't she have been umping? mayn't we have been umping? mayn't you have been umping? mayn't they have been umping?