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module Main where import Control.Applicative import Control.Monad import Data.Char isLeftHandChar :: Char -> Bool isLeftHandChar = (`elem` "qwertasdfgzxcvb") . toLower isLeftHand :: String -> Bool isLeftHand = all isLeftHandChar main :: IO () main = do words <- lines <$> readFile "/usr/share/dict/words" forM_ words $ \w -> when (isLeftHand w) $ putStrLn w
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