4 letters
- orcs7
- ores4
- ours5
- pecs10
- peer7
- pees7
- pree7
- pubs11
- puce11
- pure8
- purs8
- race7
- rase4
- rebs7
- reck11
- recs7
- rede5
- reds5
- reed5
- reef7
- reek8
- reel5
- rees4
- refs7
- regs6
- reis4
- rems7
- reps7
- resh6
- rest4
- rete4
- rets4
- revs8
- rhus7
- ribs7
- rice7
- rise4
- robe7
- robs7
- rocs7
- roes4
- rose4
- roue5
- rube8
- rubs8
- ruby10
- ruck12
- rude6
- rued6
- ruer5
- rues5
- rugs7
- rule6
- rums8
- rune6
- runs6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- ryes6
- sabe7
- scab10
- scar7
- scry9
- scud9
- scum11
- scup11
- scut8
- sear4
- secs7
- sect7
- seed5
- seek8
- seel5
- seem7
- seen5
- seep7
- seer4
- sees4
- seme7
- sene5
- sera4
- sere4
- serf7
- sers4
- sice7
- sire4
- skee8
- slub9
- slue6
- slur6
- snub9
- sorb7
- sore4
- sour5
- spec10
- spue8
- spur8
- stub8
- suba8
- subs8
- such10
- suck12
- sued6
- suer5
- sues5
- suet5
- supe8
- sura5
- surd6
- sure5
- surf8
- syce9
- tees4
- tree4
- true5
- tube8
- tubs8
- ukes9
- unbe9
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- veer8
- vees8
- verb11
- webs10
- weer7
- wees7
- were7
- zebu17
- zees13