4 letters
- sigh8
- sign7
- sike8
- silk9
- sima7
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sire4
- sirs4
- skag10
- skas8
- skat8
- skeg10
- skid9
- skim11
- skin9
- skip11
- skis8
- skit8
- skua9
- slag7
- slam8
- slim8
- smit7
- smog9
- smug10
- snag7
- snap8
- snaw8
- snib8
- snip8
- snit5
- snog7
- snug8
- soak8
- soar4
- soma7
- song7
- sora4
- sori4
- sorn5
- spam10
- span8
- spar7
- spik11
- spin8
- sris4
- stag6
- star4
- stir4
- sung8
- sunk10
- sura5
- swag9
- swam10
- swan8
- swig9
- swim10
- tags6
- tain5
- tams7
- tang7
- tank9
- tans5
- tarn5
- tars4
- task8
- tiki8
- ting7
- tins5
- tram7
- trig6
- trim7
- tsar4
- unai6
- urns6
- ursa5
- vagi10
- vain9
- vair8
- vang11
- vans9
- vars8
- viga10
- vigs10
- vims11
- vina9
- visa8
- wags9
- wain8
- wair7
- wans8
- wark11
- warm10
- warn8
- wars7
- wigs9
- wing10
- wink12
- wins8
- yagi8
- yaks10
- yams9
- yang9
- yank11
- yarn7
- yins7
- zags15
- zigs15
- zing16
- zins14