17
21
20
18
8
18
9
17
8
11
10
15
21
20
17
15
21
17
21
17
21
21
21
21
21
20
20
20
21
20
21
21
21
21
21
21
21
19
21
21
21
21
21
20
21
21
14
15
15
10
10
10
20
20
21
21
21
20
21
21
20
21
21
20
21
21
21
21
21
21
17
20
21
21
21
21
21
21
21
16
17
21
21
21
21
17
21
21
21
21
21
21
21
21
21
17
20
21
21
21