18
21
16
16
21
21
17
16
21
16
20
16
21
21
21
15
21
21
21
15
16
15
16
21
21
16
21
16
15
21
15
21
21
21
21
21
21
21
21
20
15
21
21
21
21
16
21
16
10
19
21
16
16
16
21
21
21
19
17
21
15
15
15
21
17
15
15
16
21
21
12
21
21
16
21
16
21
17
21
20
21
17
21
15
21
21
21
21
12
21
21
21
16
16
19
15
21
15
15
21