a-ii aaaa aaab aaac aaai aaba aabb aabc aabi aaca aacb aacc aaci aaco aaib aaic aaii aaoo abaa abab abac abag abai abb- abba abbb abbi abbo abca abcb abcc abci abia abib abic abig aboa abob aboo acaa acab acac acag acai acba acca accc acci acco acga acgi aci- acia acic acoa acog ag-o agac agag agai agao agba agbo agca agcc agco agga aggi agia agib agic agig agii agio agob agog agoo aiai aiba aibo aica aicc aiga aigo aiia aiib aiic aioc aioi aoba aoca ba-i baaa baba babb babi babo bac- baca bacc baci baco baga bagg bagi bago baia baib baic baig baio bbbb bbci bbga bcaa bcbc bcbg bcca bccc bcci bcia bgca bgia biao biba bibb bibi bibo bica bicc bicg bici bico biga bigb bigc bigg bigo bio- bioc biog bioi boab boac boag boai boba bobb bobi bobo boca boco boga bogg bogi bogo boi- boii boob booc boog c-bo caaa caab caac caba cabg cabi cabo cac- caca cacc caci caco caga cagg cagi cago caia caib caic caio caoi cbac cbbc cbca cbcc cbga cbgb cbia ccaa ccab ccac ccag ccai ccba ccbc ccca cccb cccc ccci ccga ccgc ccic ccii ccob ccoc cgac cgcc cgcg ciaa ciao ciba cibc cibi cibo cica cicc cici cico ciga cigi ciia ciii ciob coag coai coba cobb cobi cobo coca coco cogi cogo coia coob gaba gabb gabi gabo gaga gagg gagi gago gaia gaig gbag gbbo gc-c gcaa gcbc gccc gcic gcii gcoa gggg giaa giac giai giba gibb gica giga gigg gigi gigo giog gioi goai goba gobi gobo goca goga gogi gogo goog gooi i-go iaaa iaac iaai iaba iaca iacc iago iaia ibac ibca ibga ibia icaa icab icac icag icai icao icbc icca iccb iccc icci icco icga icgc icoc igac igba igbc igbo igcc igga igia igoo iiac iica iiii iiio iioi iioo ioba iobi iocg ioci ioii ioio iooi iooo oaic obai obba obbo obia oboi ocab ocac ocbc occa occc occi ocga ogai ogb ogba oggi ogoa ogog ogoi oiba oici oigo oiii ooaa ooba oobi ooia oooo