Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may underlay sth you may underlay sth he may underlay sth we may underlay sth you may underlay sth they may underlay sth
V-ing form
I may be underlay sthing you may be underlay sthing he may be underlay sthing we may be underlay sthing you may be underlay sthing they may be underlay sthing
Perfect
I may have underlay sthed you may have underlay sthed he may have underlay sthed we may have underlay sthed you may have underlay sthed they may have underlay sthed
V-ing perfect
I may have been underlay sthing you may have been underlay sthing he may have been underlay sthing we may have been underlay sthing you may have been underlay sthing they may have been underlay sthing
Negation
Simple form
I mayn't underlay sth you mayn't underlay sth he mayn't underlay sth we mayn't underlay sth you mayn't underlay sth they mayn't underlay sth
V-ing form
I mayn't be underlay sthing you mayn't be underlay sthing he mayn't be underlay sthing we mayn't be underlay sthing you mayn't be underlay sthing they mayn't be underlay sthing
Perfect
I mayn't have underlay sthed you mayn't have underlay sthed he mayn't have underlay sthed we mayn't have underlay sthed you mayn't have underlay sthed they mayn't have underlay sthed
V-ing perfect
I mayn't have been underlay sthing you mayn't have been underlay sthing he mayn't have been underlay sthing we mayn't have been underlay sthing you mayn't have been underlay sthing they mayn't have been underlay sthing
Interrogative form
Simple form
may I underlay sth? may you underlay sth? may he underlay sth? may we underlay sth? may you underlay sth? may they underlay sth?
V-ing form
may I be underlay sthing? may you be underlay sthing? may he be underlay sthing? may we be underlay sthing? may you be underlay sthing? may they be underlay sthing?
Perfect
may I have underlay sthed? may you have underlay sthed? may he have underlay sthed? may we have underlay sthed? may you have underlay sthed? may they have underlay sthed?
V-ing perfect
may I have been underlay sthing? may you have been underlay sthing? may he have been underlay sthing? may we have been underlay sthing? may you have been underlay sthing? may they have been underlay sthing?
Interro-negative form
Simple form
mayn't I underlay sth? mayn't you underlay sth? mayn't he underlay sth? mayn't we underlay sth? mayn't you underlay sth? mayn't they underlay sth?
V-ing form
mayn't I be underlay sthing? mayn't you be underlay sthing? mayn't he be underlay sthing? mayn't we be underlay sthing? mayn't you be underlay sthing? mayn't they be underlay sthing?
Perfect
mayn't I have underlay sthed? mayn't you have underlay sthed? mayn't he have underlay sthed? mayn't we have underlay sthed? mayn't you have underlay sthed? mayn't they have underlay sthed?
V-ing perfect
mayn't I have been underlay sthing? mayn't you have been underlay sthing? mayn't he have been underlay sthing? mayn't we have been underlay sthing? mayn't you have been underlay sthing? mayn't they have been underlay sthing?