breiy rbeiy beriy ebriy rebiy erbiy briey rbiey birey ibrey ribey irbey beiry ebiry biery ibery eibry iebry reiby eriby rieby ireby eirby ierby breyi rbeyi beryi ebryi rebyi erbyi bryei rbyei byrei ybrei rybei yrbei beyri ebyri byeri yberi eybri yebri reybi erybi ryebi yrebi eyrbi yerbi briye rbiye birye ibrye ribye irbye bryie rbyie byrie ybrie rybie yrbie biyre ibyre byire ybire iybre yibre riybe irybe ryibe yribe iyrbe yirbe beiyr ebiyr bieyr ibeyr eibyr iebyr beyir ebyir byeir ybeir eybir yebir biyer ibyer byier ybier iyber yiber eiybr ieybr eyibr yeibr iyebr yiebr reiyb eriyb rieyb ireyb eiryb ieryb reyib eryib ryeib yreib eyrib yerib riyeb iryeb ryieb yrieb iyreb yireb eiyrb ieyrb eyirb yeirb iyerb yierb
Note: these 'words' (valid or invalid) are all the permutations of the word breiy. These words are obtained by scrambling the letters in breiy.