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27 2 27 3 27 4 27 5 27 6 27 7 27 8 27 9 28 0 28 1 28 2 1169 1168 1167 1166 1165 1164 1163 1162 1161 1160

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