idnr = 852
8
4
6
10
4
9
2
1
5
7
12
11
11
12
3
1
2
4
3
6
12
9
5
8
3
3
4
8
6
4
2
3
10
2
11
3
6
1
12
7
9
10
4
5
8
12
5
2
6
11
Difficulty: Easy (0)