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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 79 1 79 2 523 522 521 520 519 518 517 516 515 514 513 512 511 510 509

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