21
21
21
21
21
21
16
16
16
21
21
21
21
21
21
16
15
21
21
21
21
21
21
21
20
21
21
21
21
12
16
21
16
21
17
16
21
18
21
16
21
21
18
21
21
17
17
21
16
21
21
21
16
21
21
21
21
21
18
21
21
16
21
21
21
21
21
18
21
21
12
21
21
21
21
15
21
18
16
21
21
21
20
12
21
16
16
21
21
21
18
21
21
16
12
12
17
17
9
15