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52 24 52 25 52 26 52 27 52 28 52 29 52 30 52 31 52 32 52 33 52 34 52 35 52 36 52 37 52 38 52 39 37470 37469 37468 37467 37466 37465 37464 37463 37462 37461 37460 37459 37458 37457 37456

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