8 lines
74 B
Plaintext
8 lines
74 B
Plaintext
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0 <-> 2
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1 <-> 1
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2 <-> 0, 3, 4
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3 <-> 2, 4
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4 <-> 2, 3, 6
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5 <-> 6
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6 <-> 4, 5
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