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72 6 72 7 72 8 72 9 73 0 73 1 73 2 73 3 73 4 73 5 73 6 1110 1109 1108 1107 1106 1105 1104 1103 1102 1101

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