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90 40 90 41 90 42 90 43 90 44 90 45 90 46 90 47 90 48 90 49 90 50 6447 6446 6445 6444 6443 6442 6441 6440 6439 6438

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