21
16
17
21
21
21
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21
21
21
21
21
21
16
21
21
17
21
21
18
16
21
16
16
15
16
21
17
20
15
15
8
10
9
21
15
21
18
19
12
21
13
14
21
18
8
19
18
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9
13
21
15
11
21
8
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21
21
19
19
16
18
17
21
20
21
18
21
18
19
17
18
15
17
12
16
11
12
21
21
21
21
12
21
21
21
21
21
21
21
21
21
21
21
21
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21