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56 3 56 4 56 5 56 6 56 7 56 8 56 9 57 0 57 1 57 2 57 3 1020 1019 1018 1017 1016 1015 1014 1013 1012 1011

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