17
17
21
10
21
20
21
15
21
17
21
20
16
21
17
15
15
21
21
17
21
21
21
15
21
15
15
21
16
21
21
21
15
21
21
21
21
15
21
21
19
19
20
21
21
21
21
16
20
21
21
21
21
21
21
15
21
21
21
21
21
21
21
21
21
21
17
21
21
21
16
21
21
21
21
12
21
16
21
21
21
15
16
15
17
16
15
15
12
20
15
15
15
21
15
20
15
21
16
21