4 letters
- sinh7
- sink9
- sipe7
- sips7
- sire4
- sirs4
- sith6
- skag10
- skas8
- skat8
- skep11
- skid9
- skim11
- skin9
- skip11
- skis8
- skit8
- skua9
- slap8
- slip8
- snap8
- snip8
- soak8
- soap7
- soar4
- soph9
- sora4
- sori4
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spur8
- sris4
- star4
- stir4
- sura5
- swap10
- syph11
- tahr6
- taps7
- tarp7
- tars4
- task8
- thir6
- this6
- tips7
- trap7
- trip7
- tsar4
- upas8
- ursa5
- vair8
- vars8
- visa8
- wair7
- waps10
- wark11
- warp10
- wars7
- wash9
- wasp10
- whap12
- whip12
- whir9
- wish9
- wisp10
- wrap10
- yaks10
- yaps9
- yips9
- zaps16
- zips16