7aqb
6aqbrb
5aqbr
4aqb
3aqbrb
ikpbrb
hkpbr
gkpb
fkpbrb
ekpbr
ttobr
stob
rtobrb
qtobr
ptob
42nb
32nbrb
22nbr
12nb
02nbrb
fcnbrb
ecnbr
dcnb
ccnbrb
bcnbr