0: 1 29 13
1: 0 2 26
2: 1 3 21
3: 2 28 4
4: 3 5 19
5: 4 22 6
6: 5 15 7
7: 6 8 24
8: 7 27 9
9: 8 10 18
10: 9 25 11
11: 10 12 20
12: 11 13 17
13: 0 12 14
14: 13 15 23
15: 6 14 16
16: 15 29 17
17: 12 16 18
18: 9 17 19
19: 4 18 20
20: 11 19 21
21: 2 20 22
22: 5 21 23
23: 14 22 24
24: 7 23 25
25: 10 24 26
26: 1 25 27
27: 8 26 28
28: 3 27 29
29: 0 16 28