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19 4 19 5 19 6 19 7 19 8 19 9 20 0 20 1 20 2 20 3 20 4 20 5 20 6 20 7 20 8 20 9 1346 1345 1344 1343 1342 1341 1340 1339 1338 1337 1336 1335 1334 1333 1332

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