4 letters
- sera4
- sers4
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shes6
- shin7
- shog8
- shri6
- shul8
- shun8
- shut7
- sibs7
- sics7
- sigh8
- sign7
- sing7
- sinh7
- sins5
- sirs4
- skag10
- skas8
- skua9
- slab8
- slag7
- slub9
- slug8
- slur6
- smug10
- snag7
- snap8
- snaw8
- snib8
- snob8
- snog7
- snub9
- snug8
- soar4
- sobs7
- song7
- sons5
- sora4
- sorb7
- sorn5
- sour5
- sous5
- span8
- spar7
- spas7
- spun9
- spur8
- sris4
- stab7
- stag6
- star4
- stub8
- stun6
- suba8
- subs8
- such10
- suck12
- suds6
- suer5
- sues5
- sugh9
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- swab10
- swag9
- swan8
- sync10
- tabs7
- tabu8
- tach9
- tags6
- tahr6
- tang7
- tans5
- tarn5
- tars4
- tass4
- taus5
- than7
- thru7
- thug9
- thus7
- trug7
- tsar4
- tuba8
- tubs8
- tugs7
- tuna6
- tung8
- tuns6
- turn6
- tush7
- ughs9
- ulan7
- ulna7
- unai6
- unau7
- unbe9
- unci9
- unco9
- upas8
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- user5
- uses5
- utas5
- vacs11
- vang11
- vans9
- vars8
- vaus9
- vugh13
- vugs11
- wabs10
- wags9
- wans8
- warn8
- wars7
- wash9
- waur8
- wuss8
- yang9
- yarn7
- yuan8
- yuca10
- yuch12
- yuga9
- zags15