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