15
16
12
15
16
21
21
16
14
8
15
21
21
13
21
21
21
21
21
21
20
21
21
21
21
21
21
21
21
12
15
20
19
10
14
21
12
19
9
17
13
14
8
12
21
8
21
8
19
8
18
17
21
18
9
16
18
16
17
18
18
10
21
21
21
21
21
20
20
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21