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15 46 15 47 15 48 15 49 15 50 15 51 15 52 15 53 15 54 15 55 15 56 15 57 15 58 15 59 15 60 15 61 15 62 15 63 15 64 15 65 15 66 15 67 15 68 15 69 15 70 15 71 15 72 15 73 15 74 15 75 15 76 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954

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