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81 0 81 1 81 2 81 3 81 4 81 5 81 6 81 7 81 8 81 9 82 0 1340 1339 1338 1337 1336 1335 1334 1333 1332 1331

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