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