4 letters
- seek8
- seem7
- sees4
- segs6
- seif7
- seis4
- sels5
- seme7
- semi7
- sers4
- sets4
- sews7
- shes6
- shim9
- sibs7
- sice7
- sick11
- sics7
- side5
- sike8
- silk9
- sima7
- simp10
- sims7
- sine5
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sits4
- size13
- skas8
- skee8
- skeg10
- skep11
- skew11
- skid9
- skim11
- skin9
- skip11
- skis8
- skit8
- skua9
- slim8
- slue6
- slum9
- smew10
- smit7
- smug10
- smut8
- soke8
- some7
- souk9
- sous5
- spik11
- spue8
- sris4
- stem7
- stum8
- subs8
- suck12
- suds6
- sued6
- suer5
- sues5
- suet5
- suit5
- sulk10
- sumo8
- sump11
- sums8
- sunk10
- suns6
- supe8
- sups8
- suqs14
- sure5
- suss5
- swim10
- swum11
- syke10
- ties4
- tike8
- time7
- tsks8
- tuis5
- tusk9
- ukes9
- umps11
- used6
- user5
- uses5
- vies8
- vims11
- vise8
- wise7
- wiss7
- wuss8
- yeuk11
- yuks11
- zeks17