buobs ubobs boubs obubs uobbs oubbs bubos ubbos bbuos bbuos ubbos bubos bobus obbus bbous bbous obbus bobus uobbs oubbs ubobs buobs obubs boubs buosb ubosb bousb obusb uobsb oubsb busob ubsob bsuob sbuob usbob subob bosub obsub bsoub sboub osbub sobub uosbb ousbb usobb suobb osubb soubb bubso ubbso bbuso bbuso ubbso bubso busbo ubsbo bsubo sbubo usbbo subbo bbsuo bbsuo bsbuo sbbuo bsbuo sbbuo ubsbo busbo usbbo subbo bsubo sbubo bobsu obbsu bbosu bbosu obbsu bobsu bosbu obsbu bsobu sbobu osbbu sobbu bbsou bbsou bsbou sbbou bsbou sbbou obsbu bosbu osbbu sobbu bsobu sbobu uobsb oubsb ubosb buosb obusb bousb uosbb ousbb usobb suobb osubb soubb ubsob busob usbob subob bsuob sbuob obsub bosub osbub sobub bsoub sboub
Note: these 'words' (valid or invalid) are all the permutations of the word buobs. These words are obtained by scrambling the letters in buobs.