21
15
21
15
15
19
21
16
16
21
21
21
21
16
21
20
21
21
16
21
21
21
21
21
17
20
21
21
21
21
16
21
16
21
21
16
17
21
16
21
21
21
21
18
12
21
21
12
21
12
16
16
21
21
21
21
21
15
21
21
20
21
16
21
16
16
21
21
21
15
16
18
14
21
14
21
15
21
21
16
21
20
21
16
21
21
15
21
18
16
21
12
21
17
13
12
18
14
15
17