4 letters
- sane5
- sank9
- saul6
- seal5
- seek8
- seel5
- seen5
- seep7
- sene5
- sial5
- sike8
- silk9
- silo5
- sine5
- sink9
- sipe7
- skee8
- skep11
- skin9
- skip11
- skua9
- slap8
- slip8
- sloe5
- slop8
- slue6
- snap8
- snip8
- soak8
- soap7
- soil5
- soke8
- sola5
- sole5
- soli5
- sone5
- souk9
- soul6
- soup8
- spae7
- span8
- spik11
- spin8
- spue8
- spun9
- sulk10
- sunk10
- supe8
- ukes9
- ulan7
- ulna7
- unai6
- upas8
- upon9