16
21
17
21
21
21
20
21
21
17
21
21
21
21
20
21
16
18
21
21
21
21
17
21
21
21
21
21
20
21
21
16
21
17
21
21
19
20
21
21
21
21
20
20
21
21
21
21
21
21
17
16
16
16
16
21
21
21
17
17
17
21
20
21
21
21
21
17
21
21
21
21
21
17
21
20
20
21
21
17
21
21
16
17
15
14
16
15
9
17
17
17
17
14
17
16
18