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14 16 14 17 14 18 14 19 14 20 14 21 14 22 14 23 14 24 14 25 14 26 14 27 14 28 14 29 14 30 14 31 14 32 14 33 14 34 14 35 14 36 14 37 14 38 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955

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