Some solutions with all values 0 to 6 for n=3
..0..1..2..3..4..2....0..1..2..1..2..3....0..1..2..3..4..2....0..1..0..2..3..0
..1..0..1..2..3..5....1..0..1..4..3..5....1..0..1..2..1..3....1..0..1..3..4..2
..0..1..0..1..6..0....0..1..0..6..5..4....0..1..0..5..6..4....0..1..3..4..5..6
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