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