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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 12650 12649 12648 12647 12646 12645 12644 12643 12642 12641 12640 12639 12638 12637 12636 12635 12634 12633 12632 12631 12630 12629

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