20 lines
81 B
Text
20 lines
81 B
Text
1
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7 8 10
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1 2
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1 3
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1 4
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2 5
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3 6
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5 7
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2 3
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3 4
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2 1
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1 3
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1 4
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2 1
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2 2
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2 3
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2 4
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2 5
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2 6
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2 7
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