15
9
9
21
15
21
21
16
8
8
18
8
9
15
16
9
20
14
16
10
14
19
21
12
19
21
16
18
17
10
9
19
17
14
18
21
18
17
21
21
20
21
21
21
21
21
21
21
21
17
17
21
21
15
20
21
21
16
17
21
16
21
21
19
21
20
21
20
21
21
21
21
20
21
21
21
21
20
17
21
21
19
21
21
21
21
21
21
21
21
21
21
21
21
17
21
21
21
17