n=2的一些解
..0..1..1..0..1..1..1....1..1..0..2..2..1..0....1..0..1..1..1..1..1
..2.1.2.2.1.2.0.2.2.2.2.2.2.2.2.1.1.2.2.2.2.2.2.2.1.1.2.2.2.2.2.3.2.2...2.2...2.2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2...2
..0..1..1..1..0..2..0....0..1..0..2..2..1..0....1..1..0..2..0..2..0
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