4 letters
- sift7
- sigh8
- sign7
- sike8
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sire4
- site4
- sith6
- size13
- skin9
- slue6
- sned6
- snib8
- snip8
- snit5
- snub9
- snug8
- snye7
- sone5
- spec10
- spic10
- spin8
- spue8
- spun9
- stun6
- such10
- suck12
- sued6
- suer5
- sues5
- suet5
- sugh9
- suit5
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sure5
- surf8
- syce9
- sync10
- syne7
- tens5
- then7
- thin7
- this6
- thus7
- tics7
- ties4
- tine5
- tins5
- tuis5
- tune6
- tuns6
- tush7
- ughs9
- ukes9
- unai6
- unbe9
- unci9
- unco9
- unde7
- unit6
- uric8
- urns6
- used6
- user5
- uses5
- vein9
- vice11
- vies8
- vine9
- vise8
- wens8
- when10
- whin10
- wich12
- wife10
- wine8
- wins8
- wise7
- wish9
- yech11
- yens7
- yins7
- yuch12
- zein14
- zinc17
- zins14