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15 72 2 15 72 3 15 72 4 15 72 5 15 72 6 15 72 7 15 72 8 15 72 9 15 73 0 15 73 1 15 73 2 15 73 3 15 73 4 15 73 5 15 73 6 15 73 7 30637 30636 30635 30634 30633 30632 30631 30630 30629 30628 30627 30626 30625 30624 30623

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