a-ii aaaa aaab aaai aaba aabb aabi aaib aaii aaoo abaa abab abai abb- abba abbb abbi abbo abia abib aboa abob aboo abza aiai aiba aibo aiia aiib aioi aiza aizi aoba aza- azab azai azaz azia aziz azo- azoi azoo azza azzi azzo ba-i baaa baaz baba babb babi babo baia baib baio baza bazi bazo bbbb biao biba bibb bibi bibo bio- bioi bizz boab boai boaz boba bobb bobi bobo boi- boii boob booz boza bozi bozo bzzz iaaa iaai iaba iaia ibia iiii iiio iioi iioo ioba iobi ioii ioio iooi iooo izba izia izzo obai obba obbo obia oboi oiba oiii ooaa ooba oobi ooia oooo oozi ozai zaba zabi zabo zaia zaio zaza zazi ziaz ziba zibo ziza zizi zizz zobo zoia zoio zoo- zoza zozo zzzz