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81 88 81 89 81 90 81 91 81 92 81 93 81 94 81 95 81 96 81 97 81 98 7174 7173 7172 7171 7170 7169 7168 7167 7166 7165

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