72yl 62ylrb 52ylr 42yl 32ylrb
icylrb hcylr gcyl fcylrb ecylr
tlxlr slxl rlxlrb qlxlr plxl
4uwl 3uwlrb 2uwlr 1uwl 0uwlrb
f4vlrb e4vlr d4vl c4vlrb b4vlr