4 letters
- rump11
- rums8
- rune6
- runs6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- ryes6
- sale5
- salp8
- saul6
- scar7
- scop10
- scry9
- scud9
- scum11
- scup11
- scut8
- seal5
- sear4
- secs7
- sect7
- seed5
- seek8
- seel5
- seem7
- seen5
- seep7
- seer4
- sees4
- self8
- sell6
- sels5
- seme7
- sene5
- sept7
- sera4
- sere4
- serf7
- sers4
- shul8
- sice7
- sipe7
- sire4
- skee8
- skep11
- slap8
- sled6
- slew8
- slip8
- sloe5
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- sole5
- sore4
- soul6
- soup8
- sour5
- spae7
- spar7
- spec10
- sped8
- spew10
- spic10
- spry9
- spud9
- spue8
- spun9
- spur8
- step7
- such10
- suck12
- sued6
- suer5
- sues5
- suet5
- sulk10
- sulu7
- sump11
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- syce9
- teel5
- tees4
- tele5
- tels5
- tree4
- true5
- tule6
- tups8
- ukes9
- ulus7
- umps11
- upas8
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- veep11
- veer8
- vees8
- weel8
- weep10
- weer7
- wees7
- were7
- yelp10
- yule8
- yups10
- zees13