filer ifler flier lfier ilfer lifer fielr ifelr feilr efilr ieflr eiflr fleir lfeir felir eflir lefir elfir ilefr liefr ielfr eilfr leifr elifr filre iflre flire lfire ilfre lifre firle ifrle frile rfile irfle rifle flrie lfrie frlie rflie lrfie rlfie ilrfe lirfe irlfe rilfe lrife rlife fierl iferl feirl efirl iefrl eifrl firel ifrel friel rfiel irfel rifel feril efril freil rfeil erfil refil ierfl eirfl irefl riefl erifl reifl fleri lferi felri eflri lefri elfri flrei lfrei frlei rflei lrfei rlfei ferli efrli freli rfeli erfli refli lerfi elrfi lrefi rlefi erlfi relfi ilerf lierf ielrf eilrf leirf elirf ilref liref irlef rilef lrief rlief ierlf eirlf irelf rielf erilf reilf lerif elrif lreif rleif erlif relif
Note: these 'words' (valid or invalid) are all the permutations of the word filer. These words are obtained by scrambling the letters in filer.