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27 99 28 00 28 01 28 02 28 03 28 04 28 05 28 06 28 07 28 08 28 09 3137 3136 3135 3134 3133 3132 3131 3130 3129 3128

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