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81 0 81 1 81 2 81 3 81 4 81 5 81 6 81 7 81 8 81 9 82 0 1376 1375 1374 1373 1372 1371 1370 1369 1368 1367

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