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75 4 75 5 75 6 75 7 75 8 75 9 76 0 76 1 76 2 76 3 76 4 1020 1019 1018 1017 1016 1015 1014 1013 1012 1011

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