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