1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
20000 6 12 1 a 0 2040 a 1 2040 f 1 a 2 48 a 3 4072 f 3 a 4 4072 f 0 f 2 a 5 4072 f 4 f 5