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88 67 88 68 88 69 88 70 88 71 88 72 88 73 88 74 88 75 88 76 88 77 6594 6593 6592 6591 6590 6589 6588 6587 6586 6585

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