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12 36 12 37 12 38 12 39 12 40 12 41 12 42 12 43 12 44 12 45 12 46 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978

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