reech erech reech erech eerch eerch receh erceh rceeh creeh ecreh cereh receh erceh rceeh creeh ecreh cereh eecrh eecrh ecerh ceerh ecerh ceerh reehc erehc reehc erehc eerhc eerhc rehec erhec rheec hreec ehrec herec rehec erhec rheec hreec ehrec herec eehrc eehrc eherc heerc eherc heerc reche erche rcehe crehe ecrhe cerhe rehce erhce rhece hrece ehrce herce rchee crhee rhcee hrcee chree hcree echre cehre ehcre hecre chere hcere reche erche rcehe crehe ecrhe cerhe rehce erhce rhece hrece ehrce herce rchee crhee rhcee hrcee chree hcree echre cehre ehcre hecre chere hcere eechr eechr ecehr ceehr ecehr ceehr eehcr eehcr ehecr heecr ehecr heecr echer ceher ehcer hecer cheer hceer echer ceher ehcer hecer cheer hceer
Note: these 'words' (valid or invalid) are all the permutations of the word reech. These words are obtained by scrambling the letters in reech.