4 letters
- surd6
- sure5
- surf8
- suss5
- swig9
- ting7
- tins5
- tipi7
- tips7
- trig6
- trip7
- trug7
- tugs7
- tuis5
- tung8
- tuns6
- tups8
- turn6
- ughs9
- ulus7
- umps11
- unai6
- unau7
- unci9
- unit6
- upas8
- upon9
- urbs8
- urds6
- urge7
- uric8
- urns6
- ursa5
- urus6
- user5
- uses5
- vigs10
- vugs11
- wigs9
- wing10
- wins8
- wisp10
- wiss7
- wuss8
- yins7
- yips9
- yirr6
- yups10
- zigs15
- zing16
- zins14
- zips16