4 letters
- sori4
- sorn5
- soul6
- sour5
- spin8
- spun9
- spur8
- sris4
- stir4
- stub8
- stum8
- stun6
- suba8
- subs8
- suer5
- sugh9
- suit5
- sulk10
- sulu7
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- sure5
- surf8
- swig9
- swim10
- swum11
- syli7
- tils5
- ting7
- tins5
- tirl5
- trig6
- trim7
- trug7
- tubs8
- tugs7
- tuis5
- tung8
- tuns6
- turn6
- ughs9
- ugly10
- ulan7
- ulna7
- ulus7
- umbo11
- umps11
- unai6
- unbe9
- unci9
- unit6
- urbs8
- urds6
- urge7
- uric8
- urns6
- ursa5
- urus6
- user5
- vigs10
- vims11
- virl9
- vugg13
- vugs11
- wigs9
- wing10
- wins8
- yins7
- zigs15
- zing16
- zins14