4 letters
- scam10
- scan8
- seam7
- seas4
- seis4
- semi7
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shes6
- shim9
- shin7
- ship9
- shit6
- shiv10
- shmo9
- shop9
- shri6
- shun8
- sial5
- sibs7
- sics7
- sigh8
- sign7
- sima7
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sirs4
- sith6
- sits4
- skas8
- skim11
- skin9
- skip11
- skis8
- slam8
- slap8
- slim8
- slip8
- smit7
- snag7
- snap8
- snaw8
- snib8
- snip8
- snit5
- soap7
- soma7
- sons5
- soph9
- sops7
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spic10
- spik11
- spin8
- spit7
- spiv11
- spun9
- sris4
- sump11
- sums8
- suns6
- sups8
- swam10
- swan8
- swap10
- swim10
- syph11
- tain5
- tamp10
- tams7
- tans5
- taps7
- tass4
- than7
- thin7
- this6
- tins5
- tipi7
- tips7
- umps11
- unai6
- upas8
- vain9
- vamp14
- vans9
- vims11
- vina9
- visa8
- wain8
- wans8
- waps10
- wash9
- wasp10
- wham12
- whap12
- whim12
- whin10
- whip12
- wimp13
- wins8
- wish9
- wisp10
- wiss7
- yams9
- yaps9
- yins7
- yips9
- zaps16
- zins14
- zips16