a-ii aaaa aaab aaac aaai aaba aabb aabc aabi aaca aacb aacc aaci aaco aacu aaib aaic aaii aaoo abaa abab abac abai abau abb- abba abbb abbi abbo abca abcb abcc abci abia abib abic abiu aboa abob aboo abou abua acaa acab acac acai acba acca accc acci acco accu aci- acia acic acoa acou acu- acuo aiai aiba aibo aica aicc aiia aiib aiic aioc aioi aiui aoba aoca aqai aqu- aqua aquo auaa auca auci ba-i baaa baba babb babi babo babu bac- baca bacc baci baco baia baib baic baio baqa bau- bbau bbbb bbbq bbci bcaa bcbc bcca bccc bcci bcia bcuc biao biba bibb bibi bibo bica bicc bici bico bio- bioc bioi biou biqi boab boac boai boba bobb bobi bobo bobu boca boco bocq bocu boi- boii boiu boob booc boua buba bubb bubi bubo bubq bubu buca bucc buci buco bucu buic buiu buqa c-bo caaa caab caac caba cabi cabo cabu cac- caca cacc caci caco caia caib caic caio caiu caoi cauc cauo cbac cbbc cbca cbcc cbcu cbia cboq cbqi ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci cccu ccic ccii ccob ccoc ccuc ciaa ciao ciau ciba cibc cibi cibo cica cicc cici cico cicq cicu ciia ciii ciob ciuc coai coba cobb cobi cobo cobu coca coco cocu coia coob coua coub cuau cub- cuba cubb cubi cuca cucc cuci cucq cui- iaaa iaac iaai iaba iaca iacc iacu iaia ibac ibca ibia icaa icab icac icai icao icbc icca iccb iccc icci icco iccu icoc icub iiac iica iiii iiio iioi iioo iiuc ioba iobi ioci ioii ioio iooi iooo iucc iuiu oaau oaic obai obba obbo obia oboi oboq ocab ocac ocbc occa occc occi oiba oici oiii ooaa ooba oobi ooia oooo oqui ouac oucc ouii ouu- qa-c qabo qbic qiao qibo qobu qoca qoob qqqq quaa quab quai quba qubi qubo qucu quia quib quic quob quoc quoi quu- uabc uaca uaoc uaua ubac ubba ubbi ubbo ubic ubii uboc ucai ucbc ucca ucci ucio ucua uica uocc uqac uqao uqcc uuoc uuuu