mpret pmret mrpet rmpet prmet rpmet mpert pmert meprt emprt pemrt epmrt mrept rmept merpt emrpt rempt ermpt premt rpemt permt eprmt repmt erpmt mprte pmrte mrpte rmpte prmte rpmte mptre pmtre mtpre tmpre ptmre tpmre mrtpe rmtpe mtrpe tmrpe rtmpe trmpe prtme rptme ptrme tprme rtpme trpme mpetr pmetr meptr emptr pemtr epmtr mpter pmter mtper tmper ptmer tpmer metpr emtpr mtepr tmepr etmpr tempr petmr eptmr ptemr tpemr etpmr tepmr mretp rmetp mertp emrtp remtp ermtp mrtep rmtep mtrep tmrep rtmep trmep metrp emtrp mterp tmerp etmrp temrp retmp ertmp rtemp tremp etrmp termp pretm rpetm pertm eprtm reptm erptm prtem rptem ptrem tprem rtpem trpem petrm eptrm pterm tperm etprm teprm retpm ertpm rtepm trepm etrpm terpm
Note: these 'words' (valid or invalid) are all the permutations of the word mpret. These words are obtained by scrambling the letters in mpret.