4 letters
- suns6
- sura5
- surd6
- sure5
- surf8
- swab10
- swan8
- tabs7
- tabu8
- tank9
- tans5
- tarn5
- tars4
- task8
- taus5
- tsar4
- tuba8
- tubs8
- tuna6
- tuns6
- turk9
- turn6
- tusk9
- ukes9
- ulan7
- ulna7
- ulus7
- unai6
- unau7
- unbe9
- upas8
- urbs8
- urds6
- urea5
- urns6
- ursa5
- urus6
- user5
- utas5
- vans9
- vars8
- vaus9
- wabs10
- wans8
- wark11
- warn8
- wars7
- wauk12
- waur8
- yaks10
- yank11
- yarn7
- yuan8
- yuks11