4 letters
- sain5
- sand6
- sane5
- sang7
- sank9
- sans5
- sard5
- sash6
- saul6
- sawn8
- scad8
- scan8
- scud9
- send6
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shed7
- shin7
- shod7
- shul8
- shun8
- shut7
- sinh7
- skua9
- snag7
- snap8
- snaw8
- sned6
- snub9
- snug8
- soda5
- span8
- spud9
- spun9
- stud6
- stun6
- suba8
- such10
- sudd7
- suds6
- sued6
- sugh9
- sung8
- sunk10
- sunn7
- suns6
- sura5
- surd6
- swan8
- tads5
- tans5
- taus5
- than7
- thud8
- thus7
- tuna6
- tuns6
- tush7
- udos6
- ughs9
- ulan7
- ulna7
- unai6
- unau7
- unde7
- undo7
- undy9
- upas8
- urds6
- urns6
- ursa5
- used6
- utas5
- vans9
- vaus9
- wads8
- wand9
- wans8
- wash9
- yaud8
- yuan8