1
4
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
19
2
19
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
21
1
21
1
21
1
21
1
21
1