Coordinate X: Y: Search

90 82 90 83 90 84 90 85 90 86 90 87 90 88 90 89 90 90 90 91 90 92 90 93 90 94 90 95 90 96 90 97 90 98 90 99 91 00 91 01 91 02 91 03 91 04 91 05 91 06 91 07 91 08 91 09 91 10 91 11 91 12 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972

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