4 letters
- sain5
- sand6
- semi7
- send6
- shim9
- shin7
- sial5
- side5
- sign7
- sild6
- silk9
- sill6
- silo5
- silt5
- sima7
- simp10
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- skid9
- skim11
- skin9
- slam8
- sled6
- slid6
- slim8
- slip8
- slit5
- slum9
- smit7
- sned6
- snib8
- snip8
- snit5
- soil5
- sold6
- soli5
- spin8
- swim10
- syli7
- tils5
- tins5
- vims11
- wild9
- wind9
- wins8
- yids7
- yins7
- zins14