40
1 2 123 456
2 3 123 456
3 4 123 456
4 5 123 456
5 6 123 456
6 7 123 456
7 8 123 456
8 9 123 456
9 10 123 456
10 11 123 456
11 12 123 456
12 13 123 456
13 14 123 456
14 15 123 456
15 16 123 456
16 17 123 456
17 7 0 0
18 23 0 1357
19 37 123456 0
20 1234567 18 21
21 2 12389 4567
22 3 12389 4567
23 4 12389 4567
24 5 12389 4567
25 6 12389 4567
26 7 12389 4567
27 8 12389 4567
28 9 12389 4567
29 10 12389 4567
30 11 12389 4567
31 12 12389 4567
32 13 12389 4567
33 14 12389 4567
34 15 12389 4567
35 16 12389 4567
36 17 12389 4567
37 1234 1234567 987654
38 1357 1234567 987654
39 1479 1234567 987654
40 5432 1234567 987654