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