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