16
19
9
12
16
21
16
19
16
21
21
21
21
21
15
21
21
21
21
21
21
21
21
20
17
20
21
21
21
16
21
16
16
21
21
21
16
17
16
17
21
21
21
12
21
21
21
12
21
12
16
16
21
21
21
15
21
21
15
21
21
20
16
21
16
21
16
21
15
18
14
21
21
14
21
15
21
21
21
16
15
21
20
21
21
16
21
21
21
18
16
21
12
17
12
17
14
18
18
8