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28 7 28 8 28 9 29 0 29 1 29 2 29 3 29 4 29 5 29 6 29 7 29 8 29 9 30 0 30 1 30 2 30 3 30 4 30 5 30 6 30 7 30 8 30 9 38472 38471 38470 38469 38468 38467 38466 38465 38464 38463 38462 38461 38460 38459 38458 38457 38456 38455 38454 38453 38452 38451

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