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