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88 60 88 61 88 62 88 63 88 64 88 65 88 66 88 67 88 68 88 69 88 70 6569 6568 6567 6566 6565 6564 6563 6562 6561 6560

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