20
17
21
9
9
21
8
16
20
9
16
16
16
21
16
16
21
16
21
20
16
16
17
20
21
14
20
16
21
21
16
21
17
16
21
21
15
21
21
16
21
20
20
21
21
21
21
21
21
21
21
21
21
21
21
21
21
20
16
21
21
21
21
16
21
21
21
21
16
21
21
16
21
16
16
21
21
21
21
21
21
21
16
20
21
21
21
21
16
21
21
16
21
21
21
21
21
21
18
21