4 letters
- says6
- scan8
- seas4
- seis4
- shin7
- sial5
- sibs7
- sick11
- sics7
- sign7
- sike8
- silk9
- sima7
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sips7
- sirs4
- sits4
- skag10
- skas8
- skat8
- skid9
- skim11
- skin9
- skip11
- skis8
- skit8
- skua9
- snag7
- snap8
- snaw8
- snib8
- snip8
- snit5
- soak8
- sons5
- span8
- spas7
- spik11
- spin8
- sris4
- sunk10
- suns6
- swan8
- tain5
- tank9
- tans5
- task8
- tass4
- tins5
- tsks8
- unai6
- vain9
- vans9
- vina9
- visa8
- wain8
- wans8
- wink12
- wins8
- wiss7
- yaks10
- yank11
- yins7
- zins14