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57 12 57 13 57 14 57 15 57 16 57 17 57 18 57 19 57 20 57 21 57 22 57 23 57 24 57 25 57 26 57 27 58498 58497 58496 58495 58494 58493 58492 58491 58490 58489 58488 58487 58486 58485 58484

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid