21
21
21
21
20
16
21
21
21
20
21
21
16
21
21
21
21
21
16
21
21
21
21
21
21
21
21
16
21
21
21
19
20
15
21
21
21
21
21
15
14
21
20
21
21
21
21
21
15
21
18
21
19
16
21
21
21
18
20
21
20
21
21
16
16
21
21
20
21
15
21
21
16
21
18
21
21
21
16
21
21
19
21
21
21
18
21
21
14
21
20
21
21
21
21
21
20
16
21
21