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