All solutions for 4X2
..1..1....1..1....3..1....2..1....2..1....2..1....2..1....2..1....2..1....2..1
..3..2....3..2....3..2....3..1....3..1....3..1....3..3....3..2....3..2....2..3
..3..4....4..2....4..1....3..2....3..4....4..2....4..1....3..4....4..1....3..1
..4..2....4..3....4..2....4..4....4..2....4..3....4..2....4..1....4..3....4..4
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..2..1....2..1....2..1....2..1....2..1....2..2....2..2
..2..3....2..3....2..4....2..4....2..4....3..1....3..1
..3..4....4..1....3..1....3..1....3..3....3..4....4..1
..4..1....4..3....4..3....3..4....4..1....4..1....4..3
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