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13 lines
75 B
Plaintext
13 lines
75 B
Plaintext
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a 1
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b 0
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a 1 2
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b 0 3
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0 b 3
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a 1 a 2
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a 1
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b \N
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a 1 2
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b \N 3
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a 1 a 2
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\N \N b 3
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