9
13
16
21
21
15
11
12
8
11
8
11
9
8
13
9
17
12
21
21
16
21
20
21
21
21
21
21
21
21
16
21
21
20
21
15
16
21
15
15
20
21
20
18
21
21
16
21
21
21
16
16
21
21
16
21
21
21
21
21
21
21
16
21
21
16
21
21
16
21
21
21
21
21
21
21
21
16
21
21
21
21
21
21
21
21
21
21
21
21
17
21
21
21
21
21
21
16
21