4 letters
- ruly8
- runs6
- sail5
- sain5
- saul6
- scan8
- scry9
- scud9
- scum11
- scup11
- scut8
- shin7
- shul8
- shun8
- sial5
- sice7
- sick11
- sics7
- sign7
- sild6
- silk9
- sill6
- silo5
- silt5
- sine5
- sing7
- sinh7
- sink9
- sins5
- sizy15
- skin9
- slay7
- slid6
- slim8
- slip8
- slit5
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snib8
- snip8
- snit5
- snub9
- snug8
- snye7
- soil5
- soli5
- soul6
- spic10
- spin8
- spun9
- stun6
- such10
- suck12
- suit5
- sulk10
- sulu7
- sung8
- sunk10
- sunn7
- suns6
- syce9
- syli7
- sync10
- syne7
- tics7
- tils5
- tins5
- tiny7
- tuis5
- tuns6
- tyin7
- ugly10
- ulan7
- ulna7
- ulus7
- unai6
- unci9
- unco9
- undy9
- unit6
- uric8
- urns6
- viny11
- wily10
- wins8
- winy10
- wyns10
- yens7
- yids7
- yill8
- yins7
- yips9
- yoni7
- yuan8
- yuca10
- yuch12
- yuck14
- yuks11
- yule8
- yups10
- ywis9
- zinc17
- zins14