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53 0 53 1 53 2 53 3 53 4 53 5 53 6 53 7 53 8 53 9 54 0 1408 1407 1406 1405 1404 1403 1402 1401 1400 1399

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