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56 18 0 56 18 1 56 18 2 56 18 3 56 18 4 56 18 5 56 18 6 56 18 7 56 18 8 56 18 9 56 19 0 56 19 1 56 19 2 56 19 3 56 19 4 56 19 5 56 19 6 56 19 7 56 19 8 56 19 9 56 20 0 56 20 1 56 20 2 12581 12580 12579 12578 12577 12576 12575 12574 12573 12572 12571 12570 12569 12568 12567 12566 12565 12564 12563 12562 12561 12560

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