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72 0 72 1 72 2 72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 1396 1395 1394 1393 1392 1391 1390 1389 1388 1387

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