a-ii aaaa aaab aaac aaai aaba aabb aabc aabi aaca aacb aacc aaci aaco aaib aaic aaii aaoo abaa abab abac abai abaj abb- abba abbb abbi abbo abca abcb abcc abci abia abib abic aboa abob aboo acaa acab acac acai acba acca accc acci acco aci- acia acic acoa aiai aiba aibo aica aicc aiia aiib aiic aija aioc aioi ajab ajac ajao ajba ajio ajob ajoo aoba aoca ba-i baaa baba babb babi babo bac- baca bacc baci baco baia baib baic baio baja baji bbbb bbci bcaa bcbc bcca bccc bcci bcia biaj biao biba bibb bibi bibo bica bicc bici bico bija biji bio- bioc bioi bjcc bjoa boab boac boai boba bobb bobi bobo boca boco boi- boii boji bojo boob booc c-bo caaa caab caac caba cabi cabo cac- caca cacc caci caco caia caib caic caio caja caji caoi cbac cbbc cbca cbcc cbia ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci ccic ccii ccjo ccob ccoc ciaa ciao ciba cibc cibi cibo cica cicc cici cico ciia ciii ciob cjbc cjca cjcb cjcj cjic cjob cjoi coai coba cobb cobi cobo coca coco coia cojo coob iaaa iaac iaai iaba iaca iacc iaia ibac ibca ibia icaa icab icac icai icao icbc icca iccb iccc icci icco icoc iiac iica iiii iiio iioi iioo ijji ioba iobi ioci ioii ioio iooi iooo jaba jabi jabo jaca jacc jaci jaco jaja jaji jbaa jbob jcbc jccc jcci jiao jibb jibi jiji jjcc joab joao joba jobo joca joco joia joio joji jojo oaic obai obba obbo obia obja oboi ocab ocac ocbc occa occc occi oiaj oiba oici oiii ojai ooaa ooba oobi ooia ooij ooji oooo