13
17
13
21
8
21
20
21
13
21
21
16
21
21
21
17
16
21
16
17
21
16
15
21
21
15
21
21
15
21
15
17
21
20
15
15
20
20
21
16
15
16
21
21
21
16
21
21
15
21
21
21
16
21
16
21
16
9
21
15
17
21
21
21
21
20
18
20
18
21
21
21
21
21
21
21
21
21
16
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21
21
21
15
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21
16
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21
21
21
21
21
12
21
21
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16
21