1:  6 2
2:  7 3 1
3:  8 4 2
4:  9 5 3
5:  10 4
6:  11 1 7
7:  12 2 8 6
8:  13 3 9 7
9:  14 4 10 8
10:  15 5 9
11:  16 6 12
12:  17 7 13 11
13:  18 8 14 12
14:  19 9 15 13
15:  20 10 14
16:  21 11 17
17:  22 12 18 16
18:  23 13 19 17
19:  24 14 20 18
20:  25 15 19
21:  16 22
22:  17 23 21
23:  18 24 22
24:  19 25 23
25:  20 24
processed vertex 1
processed edge (1,6)
processed edge (1,2)
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processed edge (2,3)
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processed edge (21,22)
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processed edge (9,10)
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processed edge (15,20)
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processed edge (24,25)
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processed edge (20,25)
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 -1 1 2 3 4 1 6 7 8 9 6 11 12 13 14 11 16 17 18 19 16 21 22 23 24

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