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80 8 80 9 81 0 81 1 81 2 81 3 81 4 81 5 81 6 81 7 81 8 81 9 82 0 82 1 82 2 82 3 464 463 462 461 460 459 458 457 456 455 454 453 452 451 450

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