4 letters
- sipe7
- sips7
- sith6
- skim11
- skin9
- skip11
- slam8
- slap8
- slim8
- slip8
- smit7
- snag7
- snap8
- snaw8
- snib8
- snip8
- snit5
- soap7
- soma7
- soph9
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spic10
- spik11
- spin8
- spit7
- spiv11
- spun9
- sump11
- swam10
- swan8
- swap10
- swim10
- syph11
- tain5
- tamp10
- tams7
- tans5
- taps7
- than7
- thin7
- this6
- tins5
- tips7
- umps11
- unai6
- upas8
- vain9
- vamp14
- vans9
- vims11
- vina9
- visa8
- wain8
- wans8
- waps10
- wash9
- wasp10
- wham12
- whap12
- whim12
- whin10
- whip12
- wimp13
- wins8
- wish9
- wisp10
- yams9
- yaps9
- yins7
- yips9
- zaps16
- zins14
- zips16