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66 7 66 8 66 9 67 0 67 1 67 2 67 3 67 4 67 5 67 6 67 7 67 8 67 9 68 0 68 1 68 2 1490 1489 1488 1487 1486 1485 1484 1483 1482 1481 1480 1479 1478 1477 1476

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