13
16
8
16
15
10
10
21
21
21
10
21
21
21
20
21
12
12
14
16
16
21
18
16
17
15
20
15
16
21
18
21
21
21
21
20
16
21
21
17
21
21
21
21
16
15
15
16
21
21
15
21
21
21
21
21
21
21
17
21
11
21
15
21
21
21
21
21
21
21
21
21
21
21
21
20
20
21
20
21
19
21
21
21
21
21
15
16
12
16
21
12
21
21
15
21
21
17
21