import Data.List
import Control.Applicative
import Control.Monad

main = do
  n <- readLn
  names <- replicateM n getLine
  --let newNames = filter regal (permutations "inabameguru") \\ names
  --case newNames of
  --    [] -> putStrLn "NO"
  --      _ -> putStrLn $ head newNames
  putStrLn "1"

regal [] = True
regal [charo] = charo `elem` "iaeu" 
regal (charo1 : charo2 : str) = if charo1 `elem` "iaeu"
                                   then regal (charo2 : str)
                                   else charo2 `elem` "iaeu" && regal str