21
21
21
21
20
21
21
21
21
21
21
21
21
21
21
21
21
21
20
21
21
21
21
21
21
21
11
20
17
21
21
21
21
12
21
21
21
16
21
21
12
21
21
15
20
15
21
16
16
17
21
16
21
21
16
20
16
21
15
21
16
21
16
21
16
21
16
21
21
21
16
16
21
16
21
21
21
21
21
16
21
16
16
19
20
21
16
21
16
16
17
16
21
17
21
21
21
16
17
21