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