debur edbur dbeur bdeur ebdur bedur deubr edubr duebr udebr eudbr uedbr dbuer bduer duber udber buder ubder ebudr beudr eubdr uebdr buedr ubedr debru edbru dberu bderu ebdru bedru derbu edrbu drebu rdebu erdbu redbu dbreu bdreu drbeu rdbeu brdeu rbdeu ebrdu berdu erbdu rebdu bredu rbedu deurb edurb duerb uderb eudrb uedrb derub edrub dreub rdeub erdub redub dureb udreb drueb rdueb urdeb rudeb eurdb uerdb erudb reudb uredb ruedb dbure bdure dubre udbre budre ubdre dbrue bdrue drbue rdbue brdue rbdue durbe udrbe drube rdube urdbe rudbe burde ubrde brude rbude urbde rubde eburd beurd eubrd uebrd buerd uberd ebrud berud erbud rebud breud rbeud eurbd uerbd erubd reubd urebd ruebd bured ubred brued rbued urbed rubed
Note: these 'words' (valid or invalid) are all the permutations of the word debur. These words are obtained by scrambling the letters in debur.