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23 42 23 43 23 44 23 45 23 46 23 47 23 48 23 49 23 50 23 51 23 52 23 53 23 54 23 55 23 56 23 57 23 58 23 59 23 60 23 61 23 62 23 63 23 64 23 65 23 66 23 67 23 68 23 69 23 70 23 71 23 72 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957

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