% Hypergraph built from 5x5 grid ch_simple.
% PaToH format, 1-based
1 25 25 105
1 2 6
2 1 3 7
3 2 8 4
4 3 9 5
5 4 10
6 1 7 11
7 6 2 8 12
8 7 3 9 13
9 8 4 10 14
10 9 5 15
11 6 12 16
12 11 7 13 17
13 12 8 14 18
14 13 9 15 19
15 14 10 20
16 11 17 21
17 16 12 18 22
18 17 13 19 23
19 18 14 20 24
20 19 15 25
21 16 22
22 21 17 23
23 22 18 24
24 23 19 25
25 24 20