4 letters
- pure8
- puri8
- purl9
- purs8
- push10
- puss8
- puts8
- refs7
- reft7
- regs6
- reif7
- rein5
- reis4
- rent5
- reps7
- resh6
- rest4
- rets4
- rhus7
- riel5
- rife7
- rifs7
- rift7
- rigs6
- rile5
- ring7
- rins5
- ripe7
- rips7
- rise4
- rite4
- rues5
- rugs7
- ruin6
- rule6
- rune6
- rung8
- runs6
- runt6
- ruse5
- rush7
- rust5
- ruth7
- ruts5
- segs6
- seif7
- seis4
- self8
- sels5
- sent5
- sept7
- serf7
- sers4
- sets4
- shes6
- shin7
- ship9
- shit6
- shri6
- shul8
- shun8
- shut7
- sift7
- sigh8
- sign7
- silt5
- sine5
- sing7
- sinh7
- sins5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sith6
- sits4
- slip8
- slit5
- slue6
- slug8
- slur6
- slut6
- snip8
- snit5
- snug8
- spin8
- spit7
- spue8
- spun9
- spur8
- sris4
- step7
- stir4
- stun6
- suer5
- sues5
- suet5
- sugh9
- suit5
- sung8
- suns6
- supe8
- sups8
- sure5
- surf8
- suss5
- tegs6
- tels5
- tens5
- tern5
- then7
- thin7
- thir6
- this6
- thru7
- thug9
- thus7
- tier4
- ties4
- tile5
- tils5
- tine5
- ting7
- tins5
- tips7
- tire4
- tirl5
- tref7
- trig6
- trip7
- true5
- trug7
- tugs7
- tuis5
- tule6
- tune6
- tung8
- tuns6
- tups8
- turf8
- turn6
- tush7
- ughs9
- unit6
- urge7
- urns6
- user5
- uses5