filet iflet fliet lfiet ilfet lifet fielt ifelt feilt efilt ieflt eiflt fleit lfeit felit eflit lefit elfit ileft lieft ielft eilft leift elift filte iflte flite lfite ilfte lifte fitle iftle ftile tfile itfle tifle fltie lftie ftlie tflie ltfie tlfie iltfe litfe itlfe tilfe ltife tlife fietl ifetl feitl efitl ieftl eiftl fitel iftel ftiel tfiel itfel tifel fetil eftil fteil tfeil etfil tefil ietfl eitfl itefl tiefl etifl teifl fleti lfeti felti eflti lefti elfti fltei lftei ftlei tflei ltfei tlfei fetli eftli fteli tfeli etfli tefli letfi eltfi ltefi tlefi etlfi telfi iletf lietf ieltf eiltf leitf elitf iltef litef itlef tilef ltief tlief ietlf eitlf itelf tielf etilf teilf letif eltif lteif tleif etlif telif
Note: these 'words' (valid or invalid) are all the permutations of the word filet. These words are obtained by scrambling the letters in filet.