bubby ubbby bbuby bbuby ubbby bubby bubby ubbby bbuby bbuby ubbby bubby bbbuy bbbuy bbbuy bbbuy bbbuy bbbuy ubbby bubby ubbby bubby bbuby bbuby bubyb ubbyb bbuyb bbuyb ubbyb bubyb buybb ubybb byubb ybubb uybbb yubbb bbyub bbyub bybub ybbub bybub ybbub ubybb buybb uybbb yubbb byubb ybubb bubyb ubbyb bbuyb bbuyb ubbyb bubyb buybb ubybb byubb ybubb uybbb yubbb bbyub bbyub bybub ybbub bybub ybbub ubybb buybb uybbb yubbb byubb ybubb bbbyu bbbyu bbbyu bbbyu bbbyu bbbyu bbybu bbybu bybbu ybbbu bybbu ybbbu bbybu bbybu bybbu ybbbu bybbu ybbbu bbybu bbybu bybbu ybbbu bybbu ybbbu ubbyb bubyb ubbyb bubyb bbuyb bbuyb ubybb buybb uybbb yubbb byubb ybubb ubybb buybb uybbb yubbb byubb ybubb bbyub bbyub bybub ybbub bybub ybbub
Note: these 'words' (valid or invalid) are all the permutations of the word bubby. These words are obtained by scrambling the letters in bubby.