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61 44 2 61 44 3 61 44 4 61 44 5 61 44 6 61 44 7 61 44 8 61 44 9 61 45 0 61 45 1 61 45 2 61 45 3 61 45 4 61 45 5 61 45 6 61 45 7 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963

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