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4. 䳿.
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6: 2, 18, 42.
7: ij .
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7: 1, 2, 12, 18, 19, 21, 22, 27, 43.
8: .
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8: 2, 4, 8, 18, 19, 26, 27, 30, 31, 41, 42, 48.