import Control.Applicative ((<$>))
import Control.Monad (replicateM)
import Data.List (isInfixOf)
import Data.Bool (bool)

main :: IO ()
main = do
  [n, _] <- map read <$> words <$> getLine
  solve <$> replicateM n getLine >>= putStrLn

solve :: [String] -> String
solve = bool "NO" "YES" . any f
  where f s = "LOVE" `isInfixOf` s