What are some six letter words with 3rd letter U and 4th letter S and 5th letter E and 6th letter N?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern --USEN. That is, six letter words with 3rd letter U and 4th letter S and 5th letter E and 6th letter N. In alphabetical order, they are:

causen

hausen