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52 5 52 6 52 7 52 8 52 9 53 0 53 1 53 2 53 3 53 4 53 5 53 6 53 7 53 8 53 9 54 0 1839 1838 1837 1836 1835 1834 1833 1832 1831 1830 1829 1828 1827 1826 1825

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