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14 81 14 82 14 83 14 84 14 85 14 86 14 87 14 88 14 89 14 90 14 91 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982

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