4 letters
- sima7
- simp10
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sith6
- skid9
- skin9
- skip11
- slap8
- slid6
- slip8
- snag7
- snap8
- snaw8
- sned6
- snib8
- snip8
- snit5
- soap7
- soda5
- soph9
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- sped8
- spic10
- spik11
- spin8
- spit7
- spiv11
- spud9
- spun9
- sudd7
- swan8
- swap10
- syph11
- tads5
- tain5
- tans5
- taps7
- than7
- thin7
- this6
- tins5
- tips7
- unai6
- upas8
- vain9
- vans9
- vina9
- visa8
- wadi8
- wads8
- wain8
- wand9
- wans8
- waps10
- wash9
- wasp10
- whap12
- whid10
- whin10
- whip12
- wind9
- wins8
- wish9
- wisp10
- yaps9
- yids7
- yins7
- yips9
- zaps16
- zins14
- zips16