5j5b7 4j5b 3j5b74 2j5b7 1j5b

gt4b ft4b74 et4b7 dt4b ct4b74

r23b74 q23b7 p23b o23b74 n23b7

2b3b7 1b3b 0b3b74 zb3b7 yb3b

dl2b cl2b74 bl2b7 al2b 9k2b74