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31 81 2 31 81 3 31 81 4 31 81 5 31 81 6 31 81 7 31 81 8 31 81 9 31 82 0 31 82 1 31 82 2 31 82 3 31 82 4 31 82 5 31 82 6 31 82 7 13987 13986 13985 13984 13983 13982 13981 13980 13979 13978 13977 13976 13975 13974 13973

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