4 letters
- sera4
- sers4
- seta4
- sets4
- shat6
- shut7
- sibs7
- sips7
- sirs4
- sits4
- skas8
- skat8
- skua9
- slab8
- slap8
- slat5
- slub9
- slur6
- slut6
- smut8
- snap8
- snub9
- soap7
- soar4
- sobs7
- sops7
- sora4
- sorb7
- sort4
- sots4
- soup8
- sour5
- sous5
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spit7
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- step7
- stir4
- stoa4
- stob7
- stop7
- stub8
- stud6
- stum8
- stun6
- suba8
- subs8
- suds6
- suer5
- sues5
- suet5
- suit5
- sump11
- sums8
- suns6
- supe8
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- swab10
- swap10
- swat7
- tabs7
- tabu8
- tads5
- tags6
- tahr6
- tamp10
- tams7
- tans5
- taos4
- tapa7
- tape7
- taps7
- tare4
- tarn5
- taro4
- tarp7
- tars4
- tart4
- task8
- tass4
- tats4
- taus5
- taut5
- tavs8
- taws7
- tear4
- teas4
- tepa7
- thru7
- thus7
- tips7
- tops7
- tora4
- tors4
- toss4
- tour5
- trad5
- tram7
- trap7
- tray6
- trip7
- trop7
- true5
- trug7
- tsar4
- tsks8
- tuba8
- tube8
- tubs8
- tufa8
- tugs7
- tuis5
- tump11
- tuna6
- tuns6
- tups8
- turd6
- turf8
- turk9
- turn6
- tush7
- tusk9
- tuts5
- twas7
- tzar13
- umps11
- upas8
- upby13
- urbs8
- urds6
- urea5
- urns6
- ursa5
- urus6
- user5
- uses5
- utas5
- vars8
- vast8
- vats8
- vatu9
- vaus9
- wabs10
- waps10
- warp10
- wars7
- wart7
- wasp10
- wast7
- wats7
- waur8
- wrap10
- wuss8
- yaps9
- yaup10
- yups10
- yurt7
- zaps16