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86 9 87 0 87 1 87 2 87 3 87 4 87 5 87 6 87 7 87 8 87 9 1112 1111 1110 1109 1108 1107 1106 1105 1104 1103

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