4 letters
- prim10
- prof10
- prom10
- pros7
- pule9
- puli9
- puls9
- puns9
- pure8
- puri8
- purl9
- purs8
- refs7
- reif7
- rein5
- reis4
- rems7
- repo7
- reps7
- riel5
- rife7
- rifs7
- rile5
- rime7
- rims7
- rins5
- ripe7
- rips7
- rise4
- roes4
- roil5
- role5
- rolf8
- romp10
- roms7
- roof7
- room7
- rope7
- rose4
- roue5
- roup8
- rues5
- ruin6
- rule6
- rump11
- rums8
- rune6
- runs6
- ruse5
- seif7
- self8
- semi7
- serf7
- silo5
- simp10
- sine5
- sipe7
- sire4
- slim8
- slip8
- sloe5
- slop8
- slue6
- slum9
- slur6
- snip8
- soil5
- sole5
- soli5
- solo5
- some7
- sone5
- soon5
- sore4
- sori4
- sorn5
- soul6
- soup8
- sour5
- spin8
- spue8
- spun9
- spur8
- suer5
- sulu7
- sumo8
- sump11
- supe8
- sure5
- surf8
- ulus7
- umps11
- upon9
- urns6
- urus6
- user5