21
21
21
21
20
21
21
21
21
21
20
21
21
15
21
21
21
21
20
20
21
15
16
20
21
21
21
21
17
21
21
16
21
21
21
21
21
21
21
21
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15
21
20
16
21
21
21
21
21
16
21
20
15
21
18
16
21
21
21
21
19
20
18
20
18
14
20
21
21
21
21
21
21
21
21
21
21
21
21
9
20
18
17
15
11
17
16
16
16
10
21
21
17
20
16
15
20
16
16