15
8
15
10
11
21
21
12
18
10
9
16
8
13
18
15
12
8
16
12
12
15
21
21
13
11
16
21
21
21
20
16
21
12
18
13
21
21
21
21
20
21
15
20
21
12
16
21
21
12
20
21
21
15
16
21
21
16
21
21
16
21
21
21
21
16
21
16
21
21
17
21
12
21
21
15
21
21
15
21
21
12
16
21
21
21
21
21
21
21