4 letters
- puts8
- pyes9
- pyre9
- rant5
- rape7
- raps7
- rapt7
- rase4
- rasp7
- rate4
- rato4
- rats4
- reap7
- rebs7
- recs7
- redo5
- reds5
- rees4
- refs7
- reft7
- regs6
- rein5
- reis4
- rems7
- rend6
- rent5
- repo7
- repp10
- reps7
- resh6
- rest4
- rete4
- rets4
- revs8
- rhos6
- rins5
- riot4
- ripe7
- rips7
- rise4
- rite4
- roan5
- robe7
- robs7
- rocs7
- rode5
- rods5
- roes4
- role5
- romp10
- roms7
- rood5
- roof7
- rook8
- room7
- root4
- rope7
- ropy9
- rose4
- rosy6
- rota4
- rote4
- roti4
- rotl5
- roto4
- rots4
- roue5
- roup8
- rout5
- rove8
- rows7
- rues5
- rune6
- runs6
- runt6
- ruse5
- rust5
- ruts5
- ryes6
- ryot6
- sane5
- sate4
- scop10
- scot7
- sear4
- seat4
- sect7
- seen5
- seep7
- seer4
- sego6
- send6
- sene5
- sent5
- sept7
- sera4
- sere4
- serf7
- sers4
- seta4
- sets4
- sett4
- sewn8
- sext11
- shoe6
- shoo6
- shop9
- shot6
- sine5
- sipe7
- sire4
- site4
- skep11
- sloe5
- slop8
- slot5
- snap8
- sned6
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- snye7
- soap7
- soar4
- soft7
- soke8
- sole5
- solo5
- some7
- sone5
- song7
- sons5
- sook8
- soon5
- soot4
- soph9
- sops7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- soup8
- sour5
- sown8
- spae7
- span8
- spar7
- spat7
- spec10
- sped8
- spew10
- spin8
- spit7
- spot7
- spry9
- spue8
- spun9
- spur8
- star4
- stem7
- step7
- stet4
- stew7
- stey6
- stir4
- stoa4
- stob7
- stop7
- stow7
- stun6
- stye6
- suer5
- suet5
- supe8
- sure5
- swop10
- swot7
- syne7
- tans5
- taos4
- tape7
- taps7
- tare4
- tarn5
- taro4
- tarp7
- tars4
- tear4
- teas4
- teds5
- teen5
- tees4