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81 6 81 7 81 8 81 9 82 0 82 1 82 2 82 3 82 4 82 5 82 6 1391 1390 1389 1388 1387 1386 1385 1384 1383 1382

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