3
3
1
3
2
2
3
4
3
3
2
1
5
6
1
1
6
1
3
6
3
1
13
3
6
3
1
6
1
6
1
2
1
5
4
3
3
3
5
3
3
3
1
1
3
1
3
2
2
3
3
3
3
4
1
4
2
1
2
1
7
1
3
7
3
1
13
3
7
3
1
7
1
1
5
1
5
1
5
3
3
3
3
5
3
1
3
1
Paper Snowflakes