reest erest reest erest eerst eerst reset erset rseet sreet esret seret reset erset rseet sreet esret seret eesrt eesrt esert seert esert seert reets erets reets erets eerts eerts retes ertes rtees trees etres teres retes ertes rtees trees etres teres eetrs eetrs eters teers eters teers reste erste rsete srete esrte serte retse ertse rtese trese etrse terse rstee srtee rtsee trsee stree tsree estre setre etsre tesre stere tsere reste erste rsete srete esrte serte retse ertse rtese trese etrse terse rstee srtee rtsee trsee stree tsree estre setre etsre tesre stere tsere eestr eestr esetr seetr esetr seetr eetsr eetsr etesr teesr etesr teesr ester seter etser teser steer tseer ester seter etser teser steer tseer
Note: these 'words' (valid or invalid) are all the permutations of the word reest. These words are obtained by scrambling the letters in reest.