4 letters
- sacs7
- salp8
- same7
- samp10
- saps7
- saul6
- scab10
- scad8
- scag9
- scam10
- scan8
- scar7
- scat7
- scop10
- scud9
- scum11
- scup11
- scut8
- seam7
- sham9
- sima7
- simp10
- skua9
- slam8
- slap8
- slum9
- smug10
- smut8
- snap8
- soap7
- soma7
- soup8
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spec10
- spic10
- spud9
- spue8
- spun9
- spur8
- stum8
- suba8
- such10
- suck12
- sumo8
- sump11
- sums8
- supe8
- sups8
- sura5
- swam10
- swap10
- swum11
- tamp10
- tams7
- taps7
- taus5
- tump11
- tups8
- umps11
- upas8
- ursa5
- utas5
- vacs11
- vamp14
- vaus9
- waps10
- wasp10
- yams9
- yaps9
- yaup10
- yuca10
- yups10
- zaps16