0 [501988, 499243, 495885, 7545, 133860]
0 4
0 1
1 [501988, 499243, 495885, 7545, 133860]
1 2
1 0
2 [501988, 499243, 495885, 7545, 133860]
2 3
2 1
3 [501988, 499243, 495885, 7545, 133860]
3 4
3 2
4 [501988, 499243, 495885, 7545, 133860]
4 3
0 [501988, 499243, 495885, 7]
0 3
0 1
1 [501988, 499243, 495885, 7]
1 2
1 0
2 [501988, 499243, 495885, 7]
2 3
2 1
3 [501988, 499243, 495885, 7]
3 4