posse opsse psose spose ospse sopse posse opsse psose spose ospse sopse pssoe spsoe pssoe spsoe sspoe sspoe osspe sospe osspe sospe ssope ssope poses opses psoes spoes ospes sopes poess opess peoss eposs oepss eopss pseos speos pesos epsos sepos espos oseps soeps oesps eosps seops esops poses opses psoes spoes ospes sopes poess opess peoss eposs oepss eopss pseos speos pesos epsos sepos espos oseps soeps oesps eosps seops esops psseo spseo psseo spseo sspeo sspeo pseso speso pesso epsso sepso espso pseso speso pesso epsso sepso espso ssepo ssepo sespo esspo sespo esspo ossep sosep ossep sosep ssoep ssoep osesp soesp oessp eossp seosp esosp osesp soesp oessp eossp seosp esosp sseop sseop sesop essop sesop essop
Note: these 'words' (valid or invalid) are all the permutations of the word posse. These words are obtained by scrambling the letters in posse.