4 letters
- pure8
- purl9
- purs8
- push10
- race7
- rale5
- rape7
- raps7
- rase4
- rash6
- rasp7
- real5
- reap7
- recs7
- repo7
- reps7
- resh6
- rhea6
- rhos6
- rhus7
- rocs7
- roes4
- role5
- rope7
- rose4
- roue5
- roup8
- rues5
- rule6
- ruse5
- rush7
- sale5
- salp8
- saul6
- scar7
- scop10
- scup11
- seal5
- sear4
- sera4
- shea6
- shoe6
- shoo6
- shop9
- shul8
- slap8
- sloe5
- slop8
- slue6
- slur6
- soap7
- soar4
- sola5
- sole5
- solo5
- soph9
- sora4
- sore4
- soul6
- soup8
- sour5
- spae7
- spar7
- spec10
- spue8
- spur8
- such10
- suer5
- sulu7
- supe8
- sura5
- sure5
- ulus7
- upas8
- urea5
- ursa5
- urus6
- user5