4 letters
- soft7
- soya6
- span8
- spat7
- spay9
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stey6
- stoa4
- stun6
- stye6
- swan8
- swat7
- sway9
- sync10
- syne7
- tabs7
- tads5
- tags6
- tain5
- taka8
- tala5
- tams7
- tang7
- tank9
- tans5
- taos4
- tapa7
- taps7
- tarn5
- tars4
- task8
- tass4
- tats4
- taus5
- tavs8
- taws7
- taxa11
- teas4
- tens5
- than7
- tins5
- tiny7
- tons5
- tony7
- toys6
- tray6
- tsar4
- tufa8
- tuna6
- tuns6
- twas7
- tyes6
- tyin7
- tyne7
- utas5
- vans9
- vasa8
- vast8
- vats8
- waft10
- wans8
- want8
- wany10
- wast7
- wats7
- ways9
- wyns10
- xyst13
- yaff12
- yaks10
- yams9
- yang9
- yank11
- yaps9
- yarn7
- yawn10
- yaws9
- yays8
- yean7
- yeas6
- yens7
- yins7
- yuan8
- zany16