abuna bauna aubna uabna buana ubana abnua banua anbua nabua bnaua nbaua aunba uanba anuba nauba unaba nuaba bunaa ubnaa bnuaa nbuaa unbaa nubaa abuan bauan auban uaban buaan ubaan abaun baaun aabun aabun baaun abaun auabn uaabn aaubn aaubn uaabn auabn buaan ubaan bauan abuan uaban auban abnau banau anbau nabau bnaau nbaau abanu baanu aabnu aabnu baanu abanu anabu naabu aanbu aanbu naabu anabu bnaau nbaau banau abnau nabau anbau aunab uanab anuab nauab unaab nuaab auanb uaanb aaunb aaunb uaanb auanb anaub naaub aanub aanub naaub anaub unaab nuaab uanab aunab nauab anuab bunaa ubnaa bnuaa nbuaa unbaa nubaa buana ubana bauna abuna uabna aubna bnaua nbaua banua abnua nabua anbua unaba nuaba uanba aunba nauba anuba
Note: these 'words' (valid or invalid) are all the permutations of the word abuna. These words are obtained by scrambling the letters in abuna.