1
4
1
4
3
3
3
3
3
3
3
3
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
7
2
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1
21
1