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54 1 54 2 54 3 54 4 54 5 54 6 54 7 54 8 54 9 55 0 55 1 55 2 55 3 55 4 55 5 55 6 1345 1344 1343 1342 1341 1340 1339 1338 1337 1336 1335 1334 1333 1332 1331

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