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