4 letters
- soon5
- sora4
- sorn5
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- soya6
- soys6
- span8
- spay9
- spun9
- stay6
- stoa4
- stun6
- suba8
- sumo8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- swan8
- sway9
- sybo9
- sync10
- syne7
- tans5
- taos4
- taus5
- tons5
- tony7
- toys6
- tuna6
- tuns6
- udos6
- ulan7
- ulna7
- unai6
- unau7
- unco9
- undo7
- undy9
- unto6
- upas8
- upon9
- urns6
- ursa5
- utas5
- vans9
- vaus9
- wans8
- wany10
- ways9
- wons8
- wyns10
- yaks10
- yams9
- yang9
- yank11
- yaps9
- yarn7
- yaud8
- yaup10
- yawn10
- yaws9
- yays8
- yean7
- yeas6
- yens7
- yins7
- yobs9
- yods7
- yoga8
- yoks10
- yond8
- yoni7
- your7
- yows9
- yuan8
- yuca10
- yuga9
- yuks11
- yups10
- zany16