4 letters
- nurl7
- nuts6
- onus6
- orcs7
- ours5
- pics10
- pins8
- pirn8
- prim10
- puns9
- puri8
- purs8
- quin15
- rain5
- rami7
- rams7
- rani5
- recs7
- rein5
- reis4
- rems7
- rhus7
- rias4
- ribs7
- rice7
- rich9
- rick11
- rids5
- rifs7
- rigs6
- rime7
- rims7
- rimy9
- rind6
- ring7
- rink9
- rins5
- rips7
- rise4
- risk8
- rocs7
- roms7
- rubs8
- ruck12
- rues5
- rugs7
- ruin6
- rump11
- rums8
- rune6
- rung8
- runs6
- runt6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- sain5
- sari4
- scam10
- scan8
- scar7
- scry9
- scud9
- scum11
- scup11
- scut8
- semi7
- shim9
- shin7
- shri6
- shun8
- sice7
- sick11
- sics7
- sign7
- sima7
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sire4
- sirs4
- skim11
- skin9
- slim8
- slum9
- slur6
- smit7
- smug10
- smut8
- snib8
- snip8
- snit5
- snub9
- snug8
- sori4
- sorn5
- sour5
- spic10
- spin8
- spun9
- spur8
- sris4
- stir4
- stum8
- stun6
- such10
- suck12
- suer5
- suit5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- sure5
- surf8
- swim10
- swum11
- sync10
- tics7
- tins5
- trim7
- tuis5
- tuns6
- turn6
- umps11
- unai6
- unci9
- unco9
- unit6
- urbs8
- urds6
- uric8
- urns6
- ursa5
- urus6
- user5
- vims11
- wins8
- yins7
- zinc17
- zins14