4 letters
- quin15
- quip17
- rill6
- rins5
- rips7
- ruin6
- runs6
- sail5
- sain5
- sall6
- salp8
- saul6
- scup11
- sell6
- shin7
- ship9
- shul8
- shun8
- sial5
- sign7
- sild6
- silk9
- sill6
- silo5
- silt5
- simp10
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- skin9
- skip11
- slap8
- slid6
- slim8
- slip8
- slit5
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snap8
- snib8
- snip8
- snit5
- snub9
- snug8
- soil5
- soli5
- soul6
- soup8
- span8
- spic10
- spik11
- spin8
- spit7
- spiv11
- spud9
- spue8
- spun9
- spur8
- stun6
- suit5
- sulk10
- sulu7
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- syli7
- till6
- tils5
- tins5
- tips7
- tuis5
- tuns6
- tups8
- ulan7
- ulna7
- ulus7
- umps11
- unai6
- unau7
- unci9
- unit6
- upas8
- upon9
- urns6
- urus6
- vill10
- will9
- wins8
- wisp10
- yill8
- yins7
- yips9
- yups10
- zill15
- zins14
- zips16