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