4 letters
- rifs7
- rift7
- rime7
- rims7
- rimy9
- rind6
- ring7
- rink9
- rins5
- roam7
- roan5
- ruff11
- ruga7
- ruin6
- rump11
- rums8
- rune6
- rung8
- runs6
- runt6
- rush7
- ruth7
- sain5
- sari4
- sham9
- shim9
- shin7
- shri6
- shun8
- sima7
- sinh7
- sunn7
- sura5
- surf8
- tahr6
- tain5
- tarn5
- than7
- thin7
- thir6
- thru7
- tram7
- trim7
- tufa8
- tuna6
- turf8
- turn6
- ulan7
- ulna7
- unai6
- unau7
- unci9
- unit6
- urea5
- uric8
- urns6
- ursa5
- vain9
- vair8
- vara8
- vina9
- waif10
- wain8
- wair7
- warm10
- warn8
- waur8
- wham12
- whim12
- whin10
- whir9
- yarn7
- yuan8
- zarf16