21
21
21
21
16
21
21
21
21
21
20
21
21
20
16
21
21
21
21
21
21
21
13
21
20
15
20
21
21
21
21
20
21
20
18
21
21
21
21
21
21
21
21
21
17
21
21
21
15
12
21
21
21
21
21
21
15
21
21
21
21
21
21
21
21
21
21
21
21
20
16
21
20
21
17
21
21
21
20
15
15
21
21
21
16
20
21
21
21
15
21
21
21
21
21
21
21
15
21
21