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31 03 31 04 31 05 31 06 31 07 31 08 31 09 31 10 31 11 31 12 31 13 31 14 31 15 31 16 31 17 31 18 11289 11288 11287 11286 11285 11284 11283 11282 11281 11280 11279 11278 11277 11276 11275

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