16
21
21
21
16
14
21
16
21
21
16
21
21
21
21
21
12
21
21
21
21
21
21
18
21
21
21
21
21
21
21
21
13
21
21
16
21
21
20
21
21
21
16
16
17
21
12
21
16
16
21
21
20
13
20
18
21
17
21
21
15
20
21
21
18
21
21
21
19
21
21
16
21
20
21
21
21
21
21
21
21
21
16
20
16
20
21
21
21
21
21
21
21
21
21
21
20
17
17
8