import           Control.Monad                  ( replicateM )
import           Data.List                      ( sortBy )

main :: IO ()
main = do
  n  <- readLn
  ls <- replicateM n $ tail . map read . words <$> getLine
  putStr $ unlines $ map (unwords . map show) $ solve ls

solve :: [[Int]] -> [[Int]]
solve = map $ sortBy $ flip compare