hsera shera hesra ehsra sehra eshra hsrea shrea hrsea rhsea srhea rshea hersa ehrsa hresa rhesa erhsa rehsa serha esrha sreha rseha ersha resha hsear shear hesar ehsar sehar eshar hsaer shaer haser ahser saher asher heasr ehasr haesr ahesr eahsr aehsr seahr esahr saehr asehr eashr aeshr hsrae shrae hrsae rhsae srhae rshae hsare share hasre ahsre sahre ashre hrase rhase harse ahrse rahse arhse srahe rsahe sarhe asrhe rashe arshe heras ehras hreas rheas erhas rehas hears ehars haers ahers eahrs aehrs hraes rhaes hares ahres rahes arhes erahs reahs earhs aerhs raehs arehs serah esrah sreah rseah ersah resah searh esarh saerh aserh easrh aesrh sraeh rsaeh sareh asreh raseh arseh erash reash earsh aersh raesh aresh
Note: these 'words' (valid or invalid) are all the permutations of the word hsera. These words are obtained by scrambling the letters in hsera.