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10 85 10 86 10 87 10 88 10 89 10 90 10 91 10 92 10 93 10 94 10 95 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978

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