nbnbb
obnbbc
pbnb
qbnbb
rbnbbc
c2nbbc
d2nb
e2nbb
f2nbbc
g2nb
1sob
2sobb
3sobbc
4sob
5sobb
qjpbb
rjpbbc
sjpb
tjpbb
ujpbbc
faqbbc
gaqb
haqbb
iaqbbc
jaqb