4 letters
- rash6
- raws7
- rhus7
- rums8
- rush7
- sack11
- sacs7
- same7
- samp10
- sash6
- saul6
- sawn8
- saws7
- scab10
- scad8
- scag9
- scam10
- scan8
- scar7
- scat7
- scow10
- scud9
- scum11
- scup11
- scut8
- seam7
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shew9
- shim9
- shmo9
- show9
- shul8
- shun8
- shut7
- sima7
- skua9
- slam8
- slaw8
- slum9
- smew10
- smug10
- smut8
- snaw8
- soma7
- spam10
- staw7
- stum8
- suba8
- such10
- suck12
- sugh9
- sumo8
- sump11
- sums8
- sura5
- swab10
- swag9
- swam10
- swan8
- swap10
- swat7
- sway9
- swim10
- swum11
- tach9
- tams7
- taus5
- taws7
- thaw9
- thus7
- tush7
- twas7
- ughs9
- umps11
- upas8
- ursa5
- utas5
- vacs11
- vaus9
- vaws11
- wabs10
- wack14
- wads8
- waes7
- wags9
- wame10
- wans8
- waps10
- warm10
- wars7
- wash9
- wasp10
- wast7
- wats7
- wauk12
- waul9
- waur8
- waws10
- ways9
- wham12
- whap12
- what9
- whim12
- whoa9
- whom12
- whys11
- wich12
- wish9
- wuss8
- wych14
- yams9
- yaws9
- yuca10
- yuch12