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71 8 71 9 72 0 72 1 72 2 72 3 72 4 72 5 72 6 72 7 72 8 72 9 73 0 73 1 73 2 73 3 1330 1329 1328 1327 1326 1325 1324 1323 1322 1321 1320 1319 1318 1317 1316

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