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18 72 2 18 72 3 18 72 4 18 72 5 18 72 6 18 72 7 18 72 8 18 72 9 18 73 0 18 73 1 18 73 2 18 73 3 18 73 4 18 73 5 18 73 6 18 73 7 50087 50086 50085 50084 50083 50082 50081 50080 50079 50078 50077 50076 50075 50074 50073

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