Some solutions for 4X6
..0..0..1..0..0..2....0..0..0..2..0..1....0..2..2..0..0..1....0..2..2..0..0..2
..0..0..0..2..0..1....0..0..0..0..0..3....0..0..0..0..1..3....0..0..0..2..0..3
..0..0..0..0..0..3....0..0..0..2..2..1....0..0..0..0..0..1....0..0..0..2..0..3
..0..0..0..0..3..1....0..0..0..0..0..1....0..0..0..0..0..2....0..0..0..0..1..1
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