a-do a-ii aaaa aaab aaad aaai aaba aabb aabd aabi aada aadi aaib aaii aaoo abaa abab abad abai abb- abba abbb abbi abbo abda abdi abdo abia abib abid aboa abob abod aboo adaa adab adad adai adao adba adbi adda addd addi addo adia adib adio adob adod adoo aiai aiba aibo aida aidb aidi aiia aiib aiid aioi aoba ba-i baaa baad baba babb babi babo bada badb badd badi bado baia baib baid baio bbad bbbb bbdd bbdo bdii biad biao biba bibb bibi bibo bida bidi bido bio- bioi boab boad boai boba bobb bobi bobo boda bodb bodi bodo boi- boid boii boob bood d-bo daab daad daba dabb dabo dada dadi dado daia daid daio dddd dia- diab diad diao diba dibb dibo dida didi dido diii doab doba dobb dobi dod- doda dodd dodi dodo doid doob dood iaaa iaai iaba iadb iaia ibad ibdo ibia ibid idad idda iddo idia idid idio iida iiii iiio iioi iioo ioba iobi iod- ioda iodd iodo ioii ioio iooi iooo obad obai obba obbo obia obid oboi odai odbo odda oddd oddi odia odio odoo oiba oido oiii ooaa ooba oobi ooda oodi ooia ooid oooo