Mann / Man Schwer / Difficult Sehr / Very Vater / Father
Lines are very difficult to learn.
It's very easy to learn. And very difficult to master.
Japanese is a very difficult language.
It was very difficult for me to be the only lyricist in the band.
It's very difficult to release an X-rated movie.
I have a very, very difficult job.
I'm a very difficult person to live with.
I had a very difficult upbringing.
It's very difficult for felons to live in society.