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