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76 6 76 7 76 8 76 9 77 0 77 1 77 2 77 3 77 4 77 5 77 6 2121 2120 2119 2118 2117 2116 2115 2114 2113 2112

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