13
8
21
8
21
9
8
10
8
13
8
19
11
9
13
18
15
21
13
19
17
15
8
17
21
8
15
9
13
21
18
21
21
21
16
21
21
20
17
21
21
21
21
21
21
21
21
21
16
21
21
21
12
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
20
19
21
21
21
17
21
21
21
21
21
21
17
21
21
21
21
21
21
21
21
21
20
21
21
21
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21