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70 7 70 8 70 9 71 0 71 1 71 2 71 3 71 4 71 5 71 6 71 7 71 8 71 9 72 0 72 1 72 2 1482 1481 1480 1479 1478 1477 1476 1475 1474 1473 1472 1471 1470 1469 1468

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