poerx operx peorx eporx oeprx eoprx porex oprex proex rpoex orpex ropex perox eprox preox rpeox erpox repox oerpx eorpx orepx roepx eropx reopx poexr opexr peoxr epoxr oepxr eopxr poxer opxer pxoer xpoer oxper xoper pexor epxor pxeor xpeor expor xepor oexpr eoxpr oxepr xoepr exopr xeopr porxe oprxe proxe rpoxe orpxe ropxe poxre opxre pxore xpore oxpre xopre prxoe rpxoe pxroe xproe rxpoe xrpoe orxpe roxpe oxrpe xorpe rxope xrope perxo eprxo prexo rpexo erpxo repxo pexro epxro pxero xpero expro xepro prxeo rpxeo pxreo xpreo rxpeo xrpeo erxpo rexpo exrpo xerpo rxepo xrepo oerxp eorxp orexp roexp eroxp reoxp oexrp eoxrp oxerp xoerp exorp xeorp orxep roxep oxrep xorep rxoep xroep erxop rexop exrop xerop rxeop xreop
Note: these 'words' (valid or invalid) are all the permutations of the word poerx. These words are obtained by scrambling the letters in poerx.