4 letters
- snaw8
- snub9
- snug8
- soar4
- sora4
- sorn5
- sour5
- span8
- spar7
- spun9
- spur8
- star4
- stun6
- suba8
- suer5
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- sure5
- surf8
- swan8
- tans5
- tarn5
- tars4
- taus5
- tsar4
- tuna6
- tuns6
- turn6
- ulan7
- ulna7
- unai6
- unau7
- upas8
- urbs8
- urds6
- urea5
- urns6
- ursa5
- urus6
- user5
- utas5
- vans9
- vara8
- vars8
- vasa8
- vaus9
- wans8
- warn8
- wars7
- waur8
- yarn7
- yuan8