20
20
9
21
10
20
16
10
11
18
19
10
21
20
21
14
14
21
19
20
8
9
14
21
21
18
8
20
19
16
10
10
17
13
14
18
19
9
21
9
14
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
16
21
20
21
21
21
21
21
21
21
21
21
21
20
21
21
20
21
21
21
20
21
21
21
21
20
21
20
21
21
21
21
20
21
21
21
21