4 letters
- sice7
- sine5
- sinh7
- sipe7
- snip8
- sone5
- soph9
- soup8
- spec10
- spic10
- spin8
- spue8
- spun9
- such10
- supe8
- then7
- thin7
- thio6
- thou7
- tine5
- tone5
- tope7
- toph9
- topi7
- tune6
- unai6
- unbe9
- unci9
- unco9
- unde7
- undo7
- unit6
- unto6
- updo9
- upon9
- uric8
- vein9
- vice11
- vine9
- vino9
- when10
- whin10
- whip12
- whop12
- wich12
- wine8
- wino8
- wipe10
- yech11
- yipe9
- yoni7
- yuch12
- zein14
- zinc17
- zoic16
- zone14