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53 77 5 53 77 6 53 77 7 53 77 8 53 77 9 53 78 0 53 78 1 53 78 2 53 78 3 53 78 4 53 78 5 15521 15520 15519 15518 15517 15516 15515 15514 15513 15512

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