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29 9 30 0 30 1 30 2 30 3 30 4 30 5 30 6 30 7 30 8 30 9 31 0 31 1 31 2 31 3 31 4 1409 1408 1407 1406 1405 1404 1403 1402 1401 1400 1399 1398 1397 1396 1395

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