16
21
21
16
20
21
16
21
21
16
21
21
21
21
15
21
21
21
21
21
14
21
16
21
16
16
21
21
19
21
21
21
21
21
17
21
21
21
15
18
15
21
21
21
21
19
21
16
21
21
21
16
21
21
16
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
21
16
21
21
21
21
21
16
20
12
16
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21