rotas ortas rtoas troas otras toras roats orats raots arots oarts aorts rtaos traos ratos artos taros atros otars toars oatrs aotrs taors ators rotsa ortsa rtosa trosa otrsa torsa rosta orsta rsota srota osrta sorta rtsoa trsoa rstoa srtoa tsroa stroa otsra tosra ostra sotra tsora stora roast orast raost arost oarst aorst rosat orsat rsoat sroat osrat sorat rasot arsot rsaot sraot asrot sarot oasrt aosrt osart soart asort saort rtaso traso ratso artso tarso atrso rtsao trsao rstao srtao tsrao strao rasto arsto rsato srato asrto sarto tasro atsro tsaro staro astro satro otasr toasr oatsr aotsr taosr atosr otsar tosar ostar sotar tsoar stoar oastr aostr osatr soatr asotr saotr tasor atsor tsaor staor astor sator
Note: these 'words' (valid or invalid) are all the permutations of the word rotas. These words are obtained by scrambling the letters in rotas.