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77 5 77 6 77 7 77 8 77 9 78 0 78 1 78 2 78 3 78 4 78 5 78 6 78 7 78 8 78 9 79 0 269 268 267 266 265 264 263 262 261 260 259 258 257 256 255

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