4 letters
- skit8
- slip8
- slit5
- slut6
- smit7
- smut8
- snap8
- snib8
- snip8
- snit5
- snot5
- snub9
- snug8
- soup8
- span8
- spat7
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spud9
- spue8
- spun9
- spur8
- step7
- stir4
- stop7
- stub8
- stud6
- stum8
- stun6
- suet5
- suit5
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- tain5
- tans5
- taps7
- taus5
- tens5
- thin7
- this6
- thus7
- tics7
- ties4
- tils5
- tine5
- ting7
- tins5
- tint5
- tiny7
- tipi7
- tips7
- tits4
- tons5
- topi7
- tops7
- trip7
- tubs8
- tugs7
- tuis5
- tump11
- tuna6
- tune6
- tung8
- tuns6
- tups8
- turn6
- tush7
- tusk9
- tuts5
- twin8
- tyin7
- umps11
- unai6
- unci9
- unit6
- unto6
- upas8
- upon9
- urns6
- utas5
- wins8
- wisp10
- wist7
- wits7
- yins7
- yips9
- yups10
- zins14
- zips16
- zits13