4 letters
- salp8
- sals5
- salt5
- sand6
- sane5
- sang7
- sank9
- sans5
- sash6
- saul6
- sawn8
- scan8
- seal5
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shin7
- shul8
- shun8
- shut7
- sial5
- sinh7
- skua9
- slab8
- slag7
- slam8
- slap8
- slat5
- slaw8
- slay7
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snag7
- snap8
- snaw8
- snub9
- snug8
- sola5
- soul6
- span8
- spun9
- stun6
- suba8
- such10
- sugh9
- sulk10
- sulu7
- sung8
- sunk10
- sunn7
- suns6
- sura5
- swan8
- tans5
- taus5
- than7
- thus7
- tuna6
- tuns6
- tush7
- ughs9
- ulan7
- ulna7
- ulus7
- ulva10
- unai6
- unau7
- upas8
- urns6
- ursa5
- utas5
- vans9
- vaus9
- wans8
- wash9
- waul9
- yuan8