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90 75 90 76 90 77 90 78 90 79 90 80 90 81 90 82 90 83 90 84 90 85 6173 6172 6171 6170 6169 6168 6167 6166 6165 6164

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