fedlo efdlo fdelo dfelo edflo deflo feldo efldo fledo lfedo elfdo lefdo fdleo dfleo fldeo lfdeo dlfeo ldfeo edlfo delfo eldfo ledfo dlefo ldefo fedol efdol fdeol dfeol edfol defol feodl efodl foedl ofedl eofdl oefdl fdoel dfoel fodel ofdel dofel odfel edofl deofl eodfl oedfl doefl odefl felod eflod fleod lfeod elfod lefod feold efold foeld ofeld eofld oefld floed lfoed foled ofled lofed olfed elofd leofd eolfd oelfd loefd olefd fdloe dfloe fldoe lfdoe dlfoe ldfoe fdole dfole fodle ofdle dofle odfle flode lfode folde oflde lofde olfde dlofe ldofe dolfe odlfe lodfe oldfe edlof delof eldof ledof dleof ldeof edolf deolf eodlf oedlf doelf odelf elodf leodf eoldf oeldf loedf oledf dloef ldoef dolef odlef lodef oldef
Note: these 'words' (valid or invalid) are all the permutations of the word fedlo. These words are obtained by scrambling the letters in fedlo.