a-be a-ii aaaa aaab aaac aaae aaai aaba aabb aabc aabi aaca aacb aacc aace aaci aaco aaea aaec aage aaib aaic aaii aaoe aaoo abaa abab abac abae abag abai abb- abba abbb abbe abbi abbo abca abcb abcc abci abec abee abia abib abic abie abig aboa abob aboo acaa acab acac acae acag acai acba acca accc acce acci acco ace- acea acec acga acgi aci- acia acic acie acoa acoe acog aeac aebi aecb aeci aega aeio ag-o agac agag agai agao agba agbo agca agcc agce agco agea agee agei agga agge aggi agia agib agic agie agig agii agio agob agog agoo aiai aiba aibo aica aicc aice aiea aiee aiga aigo aiia aiib aiic aioc aioi aoba aoca aoce ba-i baaa baba babb babe babi babo bac- baca bacc bace baci baco baga bage bagg bagi bago baia baib baic baie baig baio bbbb bbci bbeb bbga bcaa bcbc bcbg bcca bccc bcci bcec bcia bcie beag beba bebb bebe bebi bebo beca beci beeb beeg bega begg begi bego beia beic beo- bgca bgia biao biba bibb bibe bibi bibo bica bicc bice bicg bici bico bieb biga bigb bigc bige bigg bigo bio- bioc biog bioi boab boac boag boai boba bobb bobe bobi bobo boca boce boco boea boec boee boeo boga boge bogg bogi bogo boi- boie boii boob booc booe boog c-bo caaa caab caac caba cabe cabg cabi cabo cac- caca cacc cace caci caco caec caei caga cage cagg cagi cago caia caib caic caio caoi cbac cbbc cbca cbcc cbce cbea cbec cbee cbga cbgb cbia ccaa ccab ccac ccag ccai ccba ccbc ccca cccb cccc ccci ccee ccga ccgc ccic ccii ccob ccoc ceac ceba cec- ceca cece ceci ceco ceeb ceec cege cego cgac cgcc cgcg ciaa ciao ciba cibc cibe cibi cibo cica cicc cici cico ciee ciga cigi ciia ciii ciob coag coai coba cobb cobe cobi cobo coca coce coco cogi cogo coia coob eaba eaca eacc eaec eaga eage ebac ebba ebbc ebbo ebcc ebic eboe eboo ecaa ecac ecai ecao ecbc ecbe ecca eccb eccc ecce ecci ecco ecib ecig eco- ecog eeca eeea eeee eega eeoc egaa egae egao egba egbe egcc egcg egea egec egee eggb egge eggi eggo ego- egoi eiao eica eico eiec eiei eige eigg gaba gabb gabe gabi gabo gace gaea gaec gaga gage gagg gagi gago gaia gaie gaig gbag gbbo gc-c gcaa gcbc gccc gcic gcii gcoa geab geai geba gebe gebi geca gece gege gegg gego geia geic geie geig geo- geog gggg giaa giac giai giba gibb gibe gica giga gige gigg gigi gigo giog gioi goai goba gobe gobi gobo goca goce goga gogi gogo goog gooi i-be i-go iaaa iaac iaai iaba iaca iacc iaea iaec iago iaia ibac ibca ibea ibec ibeg ibga ibge ibia ibie icaa icab icac icag icai icao icbc icca iccb iccc icci icco icea icec icee icga icgc icoc ieac iecc ieie ieio igac igba igbc igbo igcc igea igga igia igoe igoo iiac iica iiie iiii iiio iioi iioo ioba iobi iocg ioci ioee ioii ioio iooi iooo o-eo oaic obai obba obbo obea obec obia obie oboe oboi ocab ocac ocbc occa occc occi oce ocee ocga oec- oeca oecc oeec oegb ogae ogai ogb ogba ogbe ogea ogee ogge oggi ogoa ogog ogoi oiba oici oigo oiii ooaa ooba oobe oobi ooia oooo