4 letters
- soap7
- sola5
- sole5
- soul6
- soup8
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spec10
- sped8
- spew10
- spud9
- spue8
- spun9
- spur8
- step7
- suba8
- sued6
- suer5
- sues5
- suet5
- sulk10
- sulu7
- sump11
- supe8
- sups8
- sura5
- sure5
- swap10
- tael5
- tale5
- tape7
- taps7
- taus5
- teal5
- teas4
- tela5
- tels5
- tepa7
- tule6
- tups8
- ukes9
- ulan7
- ulna7
- ulus7
- ulva10
- umps11
- upas8
- urea5
- ursa5
- used6
- user5
- uses5
- utas5
- uvea9
- vale9
- vase8
- vaus9
- veal9
- vela9
- waes7
- wale8
- waps10
- wasp10
- waul9
- weal8
- yaps9
- yaup10
- yeas6
- yelp10
- yule8
- yups10
- zaps16
- zeal14