18
16
21
21
21
21
21
21
14
17
17
21
16
21
16
21
16
15
21
16
21
21
21
20
21
21
17
21
20
20
21
15
21
15
17
21
21
21
21
20
19
21
21
21
19
21
21
15
16
21
21
21
17
15
21
17
21
15
15
15
21
21
16
15
16
12
15
21
21
21
15
17
16
16
21
21
21
21
21
15
21
21
21
21
17
21
21
21
20
16
21
21
21
21
21
21
11
21
21