# Example input taken from wikipedia

# The following table shows all coordinates:
|--------------------------------|
| 11 12 13 | 14 15 16 | 17 18 19 |
| 21 22 23 | 24 25 26 | 27 28 29 |
| 31 32 33 | 34 35 36 | 37 38 39 |
|--------------------------------|
| 41 42 43 | 44 45 46 | 47 48 49 |
| 51 52 53 | 54 55 56 | 57 58 59 |
| 61 62 63 | 64 65 66 | 67 68 69 |
|--------------------------------|
| 71 72 73 | 74 75 76 | 77 78 79 |
| 81 82 83 | 84 85 86 | 87 88 89 |
| 91 92 93 | 94 95 96 | 97 98 99 |
|--------------------------------|

3 11 12
15 13 14 15
22 16 25 26 35
4 17 27
16 18 28
15 19 29 39 49

25 21 22 31 32
17 23 24

9 33 34 44
8 36 46 56
20 37 38 47

6 41 51
14 42 43
17 45 55 65
17 48 57 58

13 52 53 62
20 54 64 74
12 59 69

27 61 71 81 91
6 63 72 73
20 66 76 77
6 67 68

10 75 84 85 94
14 78 79 88 89

8 82 92
16 83 93
15 86 87

13 95 96 97
17 98 99