n=2的一些解
..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1
..2..3....2..3....2..3....2..3....2..3....0..2....2..3....2..3....2..3....2..3
..4..2....4..0....0..4....0..4....2..0....1..3....0..4....0..1....1..0....4..3
..1...3…..1..2..2..3…..2..1…..4..3…..2..4…..1..4…..2..4…..3..4…..0..4
..0..4....4..3....4..1....3..4....1..4....4..3....3..2....3..4....4..2....2..1
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