4 letters
- plan9
- plat8
- plot8
- poco10
- pois7
- polo8
- pols8
- poms10
- pons8
- pool8
- poon8
- post7
- pots7
- psis7
- psst7
- sacs7
- sail5
- sain5
- salp8
- sals5
- salt5
- samp10
- sans5
- saps7
- sati4
- scam10
- scan8
- scat7
- scop10
- scot7
- sial5
- sics7
- silo5
- silt5
- sima7
- simp10
- sims7
- sins5
- sips7
- sits4
- slam8
- slap8
- slat5
- slim8
- slip8
- slit5
- slop8
- slot5
- smit7
- snap8
- snip8
- snit5
- snot5
- soap7
- soil5
- sola5
- soli5
- solo5
- sols5
- soma7
- sons5
- soon5
- soot4
- sops7
- sots4
- spam10
- span8
- spas7
- spat7
- spic10
- spin8
- spit7
- spot7
- stoa4
- stop7
- taco7
- tail5
- tain5
- talc8
- tali5
- tamp10
- tams7
- tans5
- taos4
- taps7
- tass4
- tics7
- tils5
- tins5
- tips7
- toil5
- tola5
- toms7
- tons5
- tool5
- toom7
- toon5
- topi7
- tops7
- toss4