4 letters
- seen5
- seep7
- seer4
- sees4
- seme7
- send6
- sene5
- sent5
- sept7
- sera4
- sere4
- serf7
- sers4
- sewn8
- shad7
- shea6
- shed7
- shes6
- shew9
- shin7
- ship9
- shod7
- shoe6
- shop9
- shri6
- shun8
- side5
- sine5
- sinh7
- sipe7
- sire4
- skee8
- skep11
- sled6
- snap8
- sned6
- snip8
- snye7
- sone5
- soph9
- sord5
- sore4
- sorn5
- spae7
- span8
- spar7
- spec10
- sped8
- spew10
- spin8
- spry9
- spud9
- spue8
- spun9
- spur8
- step7
- sued6
- suer5
- supe8
- surd6
- sure5
- syne7
- syph11
- teds5
- teed5
- teen5
- tees4
- tend6
- tens5
- tern5
- thee6
- then7
- tree4
- unde7
- urds6
- urns6
- used6
- user5
- veep11
- veer8
- vees8
- vend10
- weds8
- weed8
- ween8
- weep10
- weer7
- wees7
- wend9
- wens8
- were7
- whee9
- when10
- wren8
- yens7
- zeds14
- zees13