20
19
21
18
19
21
21
21
20
21
21
21
9
21
21
21
21
21
21
20
21
21
21
21
21
21
20
12
21
21
21
20
15
12
21
15
21
13
21
21
21
20
21
21
21
21
21
21
14
17
17
21
17
21
21
21
21
21
12
21
21
21
21
21
20
21
21
21
20
21
21
21
21
21
21
20
20
21
21
20
21
21
13
20
21
20
21
21
21
21
20
17
21
21
13
21
21
21
21
21