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13 87 13 88 13 89 13 90 13 91 13 92 13 93 13 94 13 95 13 96 13 97 1889 1888 1887 1886 1885 1884 1883 1882 1881 1880

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