elfed lefed efled feled lfeed fleed elefd leefd eelfd eelfd leefd elefd efeld feeld eefld eefld feeld efeld lfeed fleed lefed elfed feled efled elfde lefde eflde felde lfede flede eldfe ledfe edlfe delfe ldefe dlefe efdle fedle edfle defle fdele dfele lfdee fldee ldfee dlfee fdlee dflee eledf leedf eeldf eeldf leedf eledf eldef ledef edlef delef ldeef dleef eedlf eedlf edelf deelf edelf deelf ledef eldef ldeef dleef edlef delef efedl feedl eefdl eefdl feedl efedl efdel fedel edfel defel fdeel dfeel eedfl eedfl edefl deefl edefl deefl fedel efdel fdeel dfeel edfel defel lfede flede lefde elfde felde eflde lfdee fldee ldfee dlfee fdlee dflee ledfe eldfe ldefe dlefe edlfe delfe fedle efdle fdele dfele edfle defle
Note: these 'words' (valid or invalid) are all the permutations of the word elfed. These words are obtained by scrambling the letters in elfed.