4 letters
- must8
- mute8
- muts8
- nebs8
- neum9
- nubs9
- numb12
- obes7
- oles5
- pleb11
- plum12
- plus9
- pubs11
- pule9
- puls9
- rebs7
- rems7
- rube8
- rubs8
- rues5
- rule6
- rums8
- ruse5
- sabe7
- sale5
- same7
- saul6
- scum11
- seal5
- seam7
- seel5
- seem7
- self8
- sell6
- sels5
- seme7
- semi7
- shul8
- slab8
- slam8
- sled6
- slew8
- slim8
- slob8
- sloe5
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smew10
- smug10
- smut8
- snub9
- sole5
- some7
- soul6
- spue8
- stem7
- stub8
- stum8
- suba8
- subs8
- sued6
- suer5
- sues5
- suet5
- sulk10
- sulu7
- sumo8
- sump11
- sums8
- supe8
- sure5
- swum11
- tels5
- tube8
- tubs8
- tule6
- ukes9
- ulus7
- umbo11
- umps11
- unbe9
- urbs8
- used6
- user5
- uses5
- webs10
- ylem10
- yule8
- zebu17