4 letters
- pats7
- pawl11
- paws10
- plat8
- plot8
- plow11
- plus9
- poll9
- pols8
- port7
- post7
- pots7
- pour8
- pout8
- pows10
- prao7
- prat7
- prau8
- proa7
- pros7
- prow10
- pula9
- pull10
- puls9
- purl9
- purs8
- puts8
- qats13
- rads5
- raft7
- rags6
- rail5
- rale5
- rams7
- rant5
- raps7
- rapt7
- rase4
- rash6
- rasp7
- rate4
- rath6
- rato4
- rats4
- raws7
- rays6
- real5
- rest4
- rets4
- rhos6
- rhus7
- rial5
- rias4
- rill6
- riot4
- road5
- roam7
- roan5
- roar4
- robs7
- rocs7
- rods5
- roes4
- roil5
- role5
- rolf8
- roll6
- roms7
- root4
- rose4
- rosy6
- rota4
- rote4
- roti4
- rotl5
- roto4
- rots4
- roue5
- roup8
- rout5
- roux12
- rows7
- rubs8
- rues5
- ruga7
- rugs7
- rule6
- ruly8
- rums8
- runs6
- runt6
- ruse5
- rush7
- rusk9
- rust5
- ruth7
- ruts5
- ryas6
- ryot6
- sago6
- sail5
- sale5
- sall6
- salp8
- sals5
- salt5
- sard5
- sari4
- sark8
- sate4
- sati4
- saul6
- sawn8
- saws7
- scar7
- scat7
- scot7
- scow10
- scut8
- seal5
- sear4
- seat4
- sell6
- sera4
- seta4
- shat6
- shaw9
- shot6
- show9
- shul8
- shut7
- sial5
- sill6
- silo5
- silt5
- skat8
- skua9
- slab8
- slag7
- slam8
- slap8
- slat5
- slaw8
- slay7
- slew8
- slit5
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smut8
- snaw8
- snot5
- snow8
- soak8
- soap7
- soar4
- soda5
- sofa7
- soft7
- soil5
- soja13
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soma7
- soot4
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- sows7
- soya6
- spar7
- spat7
- spot7
- spur8
- stab7