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81 13 81 14 81 15 81 16 81 17 81 18 81 19 81 20 81 21 81 22 81 23 81 24 81 25 81 26 81 27 81 28 36176 36175 36174 36173 36172 36171 36170 36169 36168 36167 36166 36165 36164 36163 36162

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