capex acpex cpaex pcaex apcex pacex caepx acepx ceapx ecapx aecpx eacpx cpeax pceax cepax ecpax pecax epcax apecx paecx aepcx eapcx peacx epacx capxe acpxe cpaxe pcaxe apcxe pacxe caxpe acxpe cxape xcape axcpe xacpe cpxae pcxae cxpae xcpae pxcae xpcae apxce paxce axpce xapce pxace xpace caexp acexp ceaxp ecaxp aecxp eacxp caxep acxep cxaep xcaep axcep xacep cexap ecxap cxeap xceap excap xecap aexcp eaxcp axecp xaecp exacp xeacp cpexa pcexa cepxa ecpxa pecxa epcxa cpxea pcxea cxpea xcpea pxcea xpcea cexpa ecxpa cxepa xcepa excpa xecpa pexca epxca pxeca xpeca expca xepca apexc paexc aepxc eapxc peaxc epaxc apxec paxec axpec xapec pxaec xpaec aexpc eaxpc axepc xaepc exapc xeapc pexac epxac pxeac xpeac expac xepac
Note: these 'words' (valid or invalid) are all the permutations of the word capex. These words are obtained by scrambling the letters in capex.