bbyra bbyra bybra ybbra bybra ybbra bbrya bbrya brbya rbbya brbya rbbya byrba ybrba bryba rbyba yrbba rybba byrba ybrba bryba rbyba yrbba rybba bbyar bbyar bybar ybbar bybar ybbar bbayr bbayr babyr abbyr babyr abbyr byabr ybabr baybr abybr yabbr aybbr byabr ybabr baybr abybr yabbr aybbr bbray bbray brbay rbbay brbay rbbay bbary bbary babry abbry babry abbry braby rbaby barby abrby rabby arbby braby rbaby barby abrby rabby arbby byrab ybrab bryab rbyab yrbab rybab byarb ybarb bayrb abyrb yabrb aybrb brayb rbayb baryb abryb rabyb arbyb yrabb ryabb yarbb ayrbb raybb arybb byrab ybrab bryab rbyab yrbab rybab byarb ybarb bayrb abyrb yabrb aybrb brayb rbayb baryb abryb rabyb arbyb yrabb ryabb yarbb ayrbb raybb arybb
Note: these 'words' (valid or invalid) are all the permutations of the word bbyra. These words are obtained by scrambling the letters in bbyra.