yobbo oybbo ybobo byobo obybo boybo yobbo oybbo ybobo byobo obybo boybo ybboo byboo ybboo byboo bbyoo bbyoo obbyo bobyo obbyo bobyo bboyo bboyo yobob oybob yboob byoob obyob boyob yoobb oyobb yoobb oyobb ooybb ooybb yboob byoob yobob oybob boyob obyob oboyb booyb oobyb oobyb booyb oboyb yobob oybob yboob byoob obyob boyob yoobb oyobb yoobb oyobb ooybb ooybb yboob byoob yobob oybob boyob obyob oboyb booyb oobyb oobyb booyb oboyb ybboo byboo ybboo byboo bbyoo bbyoo ybobo byobo yobbo oybbo boybo obybo ybobo byobo yobbo oybbo boybo obybo bboyo bboyo bobyo obbyo bobyo obbyo obboy boboy obboy boboy bbooy bbooy oboby booby oobby oobby booby oboby oboby booby oobby oobby booby oboby bbooy bbooy boboy obboy boboy obboy
Note: these 'words' (valid or invalid) are all the permutations of the word yobbo. These words are obtained by scrambling the letters in yobbo.