4 letters
- rump11
- rums8
- rune6
- runs6
- ruse5
- same7
- samp10
- sane5
- scum11
- scup11
- seam7
- seem7
- seen5
- seep7
- seme7
- semi7
- send6
- sene5
- sent5
- sept7
- sewn8
- shun8
- simp10
- sine5
- sipe7
- skep11
- slue6
- slum9
- smew10
- smug10
- smut8
- snap8
- sned6
- snip8
- snub9
- snug8
- snye7
- some7
- sone5
- soup8
- spae7
- spam10
- span8
- spec10
- sped8
- spew10
- spin8
- spud9
- spue8
- spun9
- spur8
- stem7
- step7
- stum8
- stun6
- sued6
- suer5
- sues5
- suet5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- sure5
- swum11
- syne7
- temp10
- tens5
- tump11
- tune6
- tuns6
- tups8
- ukes9
- umps11
- unbe9
- unde7
- upas8
- upon9
- urns6
- used6
- user5
- uses5
- wens8
- yens7
- yups10