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28 52 7 28 52 8 28 52 9 28 53 0 28 53 1 28 53 2 28 53 3 28 53 4 28 53 5 28 53 6 28 53 7 28 53 8 28 53 9 28 54 0 28 54 1 28 54 2 28 54 3 28 54 4 28 54 5 28 54 6 28 54 7 28 54 8 28 54 9 17441 17440 17439 17438 17437 17436 17435 17434 17433 17432 17431 17430 17429 17428 17427 17426 17425 17424 17423 17422 17421 17420

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