n=4的一些解
..0..1..2..0. .0..1..0..2. .0..1..2..1. .0..1..2..1. .0..1..0..1
..2..1..2..0. .0..2..0..1. .0..1..2..1. .0..1..0..1. .2..1..0..1
..2..1..2..1. .1..2..0..1. .2..1..0..1. .0..1..2..1. .2..1..0..1
..0..1..0..1. .0..2..0..1. .0..1..0..1. .2.1.2.1.2.1。0..1..0..2
..0..1..0..1. .1..2..0..2. .0..1..0..1. .2..1..2..0. .0..1..0..1
..0..1..2..1. .0..1..0..1. .0..2..0..2. .2..0..2..1. .2..1..0..1
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