4 letters
- scab10
- scan8
- scat7
- scut8
- skat8
- skua9
- snub9
- stab7
- stub8
- stun6
- suba8
- suck12
- sunk10
- tabs7
- tabu8
- tace7
- tach9
- tack11
- taco7
- tact7
- tain5
- taka8
- take8
- talc8
- talk9
- tang7
- tank9
- tans5
- tarn5
- task8
- taus5
- taut5
- teak8
- than7
- tick11
- tuba8
- tube8
- tubs8
- tuck12
- tufa8
- tuna6
- tune6
- tung8
- tuns6
- turk9
- turn6
- tusk9
- ulan7
- ulna7
- unai6
- unau7
- unbe9
- unci9
- unco9
- unit6
- unto6
- utas5
- vatu9
- wack14
- want8
- wauk12
- yack13
- yank11
- yuan8
- yuca10
- yuck14