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61 45 2 61 45 3 61 45 4 61 45 5 61 45 6 61 45 7 61 45 8 61 45 9 61 46 0 61 46 1 61 46 2 61 46 3 61 46 4 61 46 5 61 46 6 61 46 7 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973

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