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72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 73 1 73 2 73 3 73 4 73 5 73 6 73 7 73 8 1281 1280 1279 1278 1277 1276 1275 1274 1273 1272 1271 1270 1269 1268 1267

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