[begin]
1 8
2 1
3 0
4 9
5 7
[end]
[begin]
1 4
2 10
3 0
4 14
5 -6
[end]
[begin]
1 5
2 10
3 0
4 15
5 -5
[end]
[begin]
1 10
2 7
3 1
4 17
5 3
[end]
