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77 19 77 20 77 21 77 22 77 23 77 24 77 25 77 26 77 27 77 28 77 29 77 30 77 31 77 32 77 33 77 34 77 35 77 36 77 37 77 38 77 39 77 40 77 41 58728 58727 58726 58725 58724 58723 58722 58721 58720 58719 58718 58717 58716 58715 58714 58713 58712 58711 58710 58709 58708 58707

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