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37 38 37 39 37 40 37 41 37 42 37 43 37 44 37 45 37 46 37 47 37 48 12880 12879 12878 12877 12876 12875 12874 12873 12872 12871

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