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