Some solutions for n=4
..0..1..1..2..1..1..0....0..0..0..0..0..1..1....0..0..0..1..0..1..2
..2..0..3..1..0..2..1....1..2..3..1..2..0..2....1..2..1..2..1..2..3
..1..0..2..1..2..1..0....3..3..0..1..3..2..3....2..3..1..0..0..0..2
..2..2..1..0..0..1..2....2..0..1..2..1..1..1....3..0..1..2..1..3..2
..1..0..0..2..1..2..0....2..1..2..3..1..1..1....3..1..3..2..3..2..1
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