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13 75 13 76 13 77 13 78 13 79 13 80 13 81 13 82 13 83 13 84 13 85 13 86 13 87 13 88 13 89 13 90 518 517 516 515 514 513 512 511 510 509 508 507 506 505 504

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