2rrbs 1rrb 0rrbsb zrrbs yrrb

d1qb c1qbsb b1qbs a1qb 90qbsb

oaqbsb naqbs maqb laqbsb kaqbs

zjpbs yjpb xjpbsb wjpbs vjpb

atob 9sobsb 8sobs 7sob 6sobsb