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87 48 87 49 87 50 87 51 87 52 87 53 87 54 87 55 87 56 87 57 87 58 6713 6712 6711 6710 6709 6708 6707 6706 6705 6704

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