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71 40 71 41 71 42 71 43 71 44 71 45 71 46 71 47 71 48 71 49 71 50 8209 8208 8207 8206 8205 8204 8203 8202 8201 8200

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