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17 33 17 34 17 35 17 36 17 37 17 38 17 39 17 40 17 41 17 42 17 43 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969

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