13
10
11
12
21
15
14
21
17
21
17
16
21
15
15
21
16
21
21
16
16
21
21
21
21
20
21
21
21
21
21
21
21
21
21
21
16
21
21
21
15
20
21
21
21
21
16
21
21
16
12
21
21
20
21
12
21
18
21
21
20
21
18
16
20
20
14
16
21
21
21
21
21
21
21
18
21
21
21
21
21
21
9
21
21
21
21
21
21
16
21
20
21
21
21
21
21
21
21