12
15
15
21
13
14
17
21
20
13
9
15
15
21
21
18
10
21
14
13
8
8
16
16
21
8
21
16
8
13
12
8
14
8
12
11
21
21
21
21
21
21
21
21
21
21
21
21
21
20
12
15
15
21
21
15
21
20
21
21
21
15
21
21
21
17
11
14
15
21
21
21
21
21
12
21
21
21
15
20
21
21
11
21
21
21
21
12
21
21
15
21
21
12
15
21
21
21
21
21