15
21
21
21
16
16
15
17
21
15
21
21
9
16
21
21
16
21
16
15
21
20
21
21
16
15
21
21
12
15
12
16
16
21
21
18
16
16
15
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
18
15
17
15
20
21
16
16
15
17
21
16
21
21
16
15
21
21
14
16
21
20
15
17
21
21
21
21
21
15
21
20
21
21
21
15
21
21
21
21