arets raets aerts earts reats erats artes rates atres tares rtaes traes aetrs eatrs aters taers etars tears retas ertas rteas treas etras teras arest raest aerst earst reast erast arset raset asret saret rsaet sraet aesrt easrt asert saert esart seart resat ersat rseat sreat esrat serat artse ratse atrse tarse rtase trase arste raste asrte sarte rsate srate atsre tasre astre satre tsare stare rtsae trsae rstae srtae tsrae strae aetsr eatsr atesr taesr etasr teasr aestr eastr asetr saetr esatr seatr atser taser aster sater tsaer staer etsar tesar estar setar tsear stear retsa ertsa rtesa tresa etrsa tersa resta ersta rseta sreta esrta serta rtsea trsea rstea srtea tsrea strea etsra tesra estra setra tsera stera
Note: these 'words' (valid or invalid) are all the permutations of the word arets. These words are obtained by scrambling the letters in arets.