xknncb
yknn
zknnc
0knncb
1knn
mbon
nbonc
oboncb
pbon
qbonc
b2onc
c2oncb
d2on
e2onc
f2oncb
0spncb
1spn
2spnc
3spncb
4spn
pjqn
qjqnc
rjqncb
sjqn
tjqnc