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77 5 77 6 77 7 77 8 77 9 78 0 78 1 78 2 78 3 78 4 78 5 78 6 78 7 78 8 78 9 79 0 488 487 486 485 484 483 482 481 480 479 478 477 476 475 474

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