mtbn
ntbnv
otbnvr
ptbn
qtbnv
bkcnv
ckcnvr
dkcn
ekcnv
fkcnvr
0adnvr
1adn
2adnv
3adnvr
4adn
p1dn
q1dnv
r1dnvr
s1dn
t1dnv
esenv
fsenvr
gsen
hsenv
isenvr