7
5
1
2
11
5
1
1
7
4
6
2
7
3
8
2
3
4
1
4
3
1
4
1
2
1
4
3
1
3
1
2
1
4
1
4
2
3
3
3
5
6
2
6
1
10
7
1
1
7
1
8
3
5
1
3
6
2
1
1
5
1
3
1
5
1
3
1
4
3
4
2
15
Great Wall of China