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72 63 72 64 72 65 72 66 72 67 72 68 72 69 72 70 72 71 72 72 72 73 8221 8220 8219 8218 8217 8216 8215 8214 8213 8212

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