1
4
|
2
5
7
|
3
6
|
1
3
10
|
2
9
11
|
12
14
|
13
15
|
|
1
4
|
2
5
7
|
3
6
|
|
1
3
10
|
2
9
11
|
|
12
14
|
13
15
|