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31 42 9 31 43 0 31 43 1 31 43 2 31 43 3 31 43 4 31 43 5 31 43 6 31 43 7 31 43 8 31 43 9 14521 14520 14519 14518 14517 14516 14515 14514 14513 14512

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