bcpbn ccpbn3 dcpb ecpbn fcpbn3
02pbn3 12pb 22pbn 32pbn3 42pb
ptqb qtqbn rtqbn3 stqb ttqbn
ekrbn fkrbn3 gkrb hkrbn ikrbn3
3asbn3 4asb 5asbn 6asbn3 7asb