21
21
21
21
20
21
21
21
21
20
12
15
16
16
21
12
21
21
21
21
21
20
16
21
21
14
21
21
15
21
21
21
21
21
14
21
21
21
21
21
21
15
21
15
21
21
15
15
13
15
19
15
20
21
21
16
14
16
17
17
21
21
21
16
21
21
21
21
15
21
21
13
15
21
20
21
15
19
21
15
17
21
21
21
21
21
21
15
20
21
15
21
21
14
20
16
21
17
21