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90 56 90 57 90 58 90 59 90 60 90 61 90 62 90 63 90 64 90 65 90 66 6174 6173 6172 6171 6170 6169 6168 6167 6166 6165

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