2
0 1
1 0
1
1 1
0
2
0 2
2 0
2
1 2
2 1
0
0
1
2 2
2
0 3
3 0
2
3 1
1 3
0
0
2
2 3
3 2
0
0
2
0 4
4 0
2
4 1
1 4
1
3 3
0
2
2 4
4 2
0
0
0
0
4
4 3
0 5
5 0
3 4
2
5 1
1 5
0
0
2
5 2
2 5
0
0
1
4 4
0
2
3 5
5 3
0
2
0 6
6 0
2
6 1
1 6
0
0
2
6 2
2 6
2
5 4
4 5
0
0
0
2
3 6
6 3
0
0
0
2
0 7
7 0
3
1 7
5 5
7 1
0
2
4 6
6 4
2
2 7
7 2
0
0
0
0
2
3 7
7 3
0
0
2
6 5
5 6
0
0
2
0 8
8 0
4
7 4
8 1
1 8
4 7
0
0
2
8 2
2 8
0
0
0
1
6 6
2
3 8
8 3
2
5 7
7 5
0
0
0
0
0
2
4 8
8 4
2
0 9
9 0
2
1 9
9 1
0
0
4
2 9
6 7
7 6
9 2
0
0
0
2
8 5
5 8
2
9 3
3 9
0
0
0
0
0
0
2
9 4
4 9
1
7 7
0
4
8 6
0 10
10 0
6 8