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51 00 5 51 00 6 51 00 7 51 00 8 51 00 9 51 01 0 51 01 1 51 01 2 51 01 3 51 01 4 51 01 5 18614 18613 18612 18611 18610 18609 18608 18607 18606 18605

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