4 letters
- puls9
- puna9
- puns9
- pure8
- purl9
- purs8
- race7
- rale5
- rape7
- raps7
- rase4
- rasp7
- real5
- reap7
- recs7
- reel5
- rees4
- repo7
- reps7
- roan5
- rocs7
- roes4
- role5
- rope7
- rose4
- roue5
- roup8
- rues5
- rule6
- rune6
- runs6
- ruse5
- sale5
- salp8
- sane5
- saul6
- scan8
- scar7
- scop10
- scup11
- seal5
- sear4
- seel5
- seen5
- seep7
- seer4
- sene5
- sera4
- sere4
- slap8
- sloe5
- slop8
- slue6
- slur6
- snap8
- soap7
- soar4
- sola5
- sole5
- solo5
- sone5
- soon5
- sora4
- sore4
- sorn5
- soul6
- soup8
- sour5
- spae7
- span8
- spar7
- spec10
- spue8
- spun9
- spur8
- suer5
- supe8
- sura5
- sure5
- ulan7
- ulna7
- unco9
- upas8
- upon9
- urea5
- urns6
- ursa5
- user5