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81 90 81 91 81 92 81 93 81 94 81 95 81 96 81 97 81 98 81 99 82 00 82 01 82 02 82 03 82 04 82 05 82 06 82 07 82 08 82 09 82 10 82 11 82 12 82 13 82 14 82 15 82 16 82 17 82 18 82 19 82 20 40159 40158 40157 40156 40155 40154 40153 40152 40151 40150 40149 40148 40147 40146 40145 40144

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