4 letters
- sord5
- sori4
- souk9
- soul6
- soup8
- sour5
- sous5
- soya6
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- sped8
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spud9
- spue8
- spun9
- spur8
- stoa4
- stop7
- stud6
- suba8
- sudd7
- suds6
- sued6
- suit5
- sumo8
- sump11
- supe8
- sups8
- sura5
- surd6
- swap10
- swop10
- tads5
- taos4
- taps7
- taus5
- tips7
- toad5
- tods5
- topi7
- tops7
- tuis5
- tups8
- udos6
- umps11
- unai6
- undo7
- upas8
- updo9
- upon9
- urds6
- ursa5
- used6
- utas5
- vaus9
- visa8
- void9
- wadi8
- wads8
- waps10
- wasp10
- wisp10
- woad8
- wops10
- yaps9
- yaud8
- yaup10
- yids7
- yips9
- yods7
- yups10
- zaps16
- zips16