import           Control.Monad as M

main :: IO ()
main = do m <- readLn
          a <- M.replicateM m readLn
          putStr $ solve a

solve :: [Int] -> String
solve = unlines . reverse . foldl (\acc x -> solve' x "" : acc) []
    where solve' :: Int -> String -> String
          solve' 0 x = x
          solve' n x | n `mod` 2 == 0 = solve' ((n `div` 2) - 1) ( 'R' : x )
                     | otherwise      = solve' ((n - 1) `div` 2) ( 'L' : x )