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51 99 5 51 99 6 51 99 7 51 99 8 51 99 9 52 00 0 52 00 1 52 00 2 52 00 3 52 00 4 52 00 5 17459 17458 17457 17456 17455 17454 17453 17452 17451 17450

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