Use a dictionary for Scrabble and Wordfeud

The following words can be composed of the letters: u, r, n, s

4-letter words (2)

runs (4)urns (4)

3-letter words (5)

nus (3)run (3)sun (3)uns (3)urn (3)

2-letter words (3)

nu (2)un (2)us (2)