lader alder ldaer dlaer adler daler laedr aledr leadr eladr aeldr ealdr ldear dlear ledar eldar delar edlar adelr daelr aedlr eadlr dealr edalr ladre aldre ldare dlare adlre dalre larde alrde lrade rlade arlde ralde ldrae dlrae lrdae rldae drlae rdlae adrle darle ardle radle drale rdale laerd alerd leard elard aelrd ealrd lared alred lraed rlaed arled raled lerad elrad lread rlead erlad relad aerld earld areld raeld erald reald ldera dlera ledra eldra delra edlra ldrea dlrea lrdea rldea drlea rdlea lerda elrda lreda rleda erlda relda derla edrla drela rdela erdla redla aderl daerl aedrl eadrl dearl edarl adrel darel ardel radel drael rdael aerdl eardl aredl raedl eradl readl deral edral dreal rdeal erdal redal
Note: these 'words' (valid or invalid) are all the permutations of the word lader. These words are obtained by scrambling the letters in lader.