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88 68 88 69 88 70 88 71 88 72 88 73 88 74 88 75 88 76 88 77 88 78 6544 6543 6542 6541 6540 6539 6538 6537 6536 6535

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