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