20
12
15
15
21
21
20
16
12
17
13
13
21
21
8
15
14
14
13
21
17
21
15
19
14
9
13
16
12
10
8
8
13
20
21
12
20
21
12
21
21
21
21
20
21
20
21
21
21
21
21
21
21
21
21
16
21
18
21
16
16
21
21
17
21
21
17
21
21
21
16
21
21
16
21
14
21
21
16
21
21
21
21
21
20
21
18
21
21
21
21
21
21
21
21
21
21
21
21
21