expos xepos epxos pexos xpeos pxeos exops xeops eoxps oexps xoeps oxeps epoxs peoxs eopxs oepxs poexs opexs xpoes pxoes xopes oxpes poxes opxes expso xepso epxso pexso xpeso pxeso exspo xespo esxpo sexpo xsepo sxepo epsxo pesxo espxo sepxo psexo spexo xpseo pxseo xspeo sxpeo psxeo spxeo exosp xeosp eoxsp oexsp xoesp oxesp exsop xesop esxop sexop xseop sxeop eosxp oesxp esoxp seoxp osexp soexp xosep oxsep xsoep sxoep osxep soxep eposx peosx eopsx oepsx poesx opesx epsox pesox espox sepox pseox speox eospx oespx esopx seopx osepx soepx posex opsex psoex spoex ospex sopex xpose pxose xopse oxpse poxse opxse xpsoe pxsoe xspoe sxpoe psxoe spxoe xospe oxspe xsope sxope osxpe soxpe posxe opsxe psoxe spoxe ospxe sopxe
Note: these 'words' (valid or invalid) are all the permutations of the word expos. These words are obtained by scrambling the letters in expos.