bk0na
ck0na1
dk0n
ek0na
fk0na1
0a1na1
1a1n
2a1na
3a1na1
4a1n
p11n
q11na
r11na1
s11n
t11na
es2na
fs2na1
gs2n
hs2na
is2na1
3i3na1
4i3n
5i3na
6i3na1
7i3n