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