4 letters
- puss8
- puts8
- rocs7
- roup8
- runs6
- scan8
- scop10
- scot7
- scow10
- scud9
- scum11
- scup11
- scut8
- shoo6
- shop9
- shun8
- slop8
- snap8
- snip8
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- soap7
- sock11
- solo5
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- soph9
- sops7
- sorn5
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- span8
- spec10
- spic10
- spin8
- spot7
- spud9
- spue8
- spun9
- spur8
- stop7
- stun6
- such10
- suck12
- sumo8
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- swop10
- sync10
- tons5
- toon5
- tops7
- tuns6
- tups8
- udos6
- umps11
- unci9
- unco9
- undo7
- unto6
- upas8
- updo9
- upon9
- urns6
- wons8
- woos7
- wops10
- yups10
- zoon14
- zoos13