brbey rbbey bbrey bbrey rbbey brbey breby rbeby berby ebrby rebby erbby bbery bbery bebry ebbry bebry ebbry rbeby breby rebby erbby berby ebrby brbye rbbye bbrye bbrye rbbye brbye brybe rbybe byrbe ybrbe rybbe yrbbe bbyre bbyre bybre ybbre bybre ybbre rbybe brybe rybbe yrbbe byrbe ybrbe breyb rbeyb beryb ebryb rebyb erbyb bryeb rbyeb byreb ybreb rybeb yrbeb beyrb ebyrb byerb yberb eybrb yebrb reybb erybb ryebb yrebb eyrbb yerbb bbeyr bbeyr bebyr ebbyr bebyr ebbyr bbyer bbyer byber ybber byber ybber beybr ebybr byebr ybebr eybbr yebbr beybr ebybr byebr ybebr eybbr yebbr rbeyb breyb rebyb erbyb beryb ebryb rbyeb bryeb rybeb yrbeb byreb ybreb reybb erybb ryebb yrebb eyrbb yerbb beyrb ebyrb byerb yberb eybrb yebrb
Note: these 'words' (valid or invalid) are all the permutations of the word brbey. These words are obtained by scrambling the letters in brbey.