4 letters
- sank9
- sans5
- sash6
- saul6
- sawn8
- scam10
- scan8
- scum11
- seam7
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shim9
- shin7
- shmo9
- shul8
- shun8
- shut7
- sima7
- sinh7
- skua9
- slam8
- slum9
- smug10
- smut8
- snag7
- snap8
- snaw8
- snub9
- snug8
- soma7
- spam10
- span8
- spun9
- stum8
- stun6
- suba8
- such10
- sugh9
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- sura5
- swam10
- swan8
- swum11
- tams7
- tans5
- taus5
- than7
- thus7
- tuna6
- tuns6
- tush7
- ughs9
- ulan7
- ulna7
- umps11
- unai6
- unau7
- upas8
- urns6
- ursa5
- utas5
- vans9
- vaus9
- wans8
- wash9
- wham12
- yams9
- yuan8