17
11
21
8
21
16
16
21
17
21
21
21
21
21
21
21
21
17
21
15
17
16
15
21
21
21
21
17
21
21
21
21
15
21
16
21
21
21
15
17
17
21
21
21
21
20
14
15
16
15
21
21
16
21
21
16
21
21
21
21
21
21
21
16
20
16
21
21
16
21
16
21
21
21
15
16
21
15
21
21
20
18
20
18
15
21
21
21
21
21
16
16
21
17
11
21
21
21
21
15