a-do a-ii aaaa aaab aaac aaad aaai aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aaco aacu aada aadc aadi aadu aaib aaic aaii aaoo abaa abab abac abad abai abau abb- abba abbb abbi abbo abca abcb abcc abcd abci abda abdi abdo abdu abia abib abic abid abiu aboa abob abod aboo abou abua abud acaa acab acac acad acai acba acca accc accd acci acco accu acda acdb acdc acdi aci- acia acic acid acoa acod acou acu- acuo adaa adab adac adad adai adao adba adbc adbi adcc adci adda addc addd addi addo addu adia adib adic adio adob adoc adod adoo adua adub aiai aiba aibo aica aicc aicd aida aidb aidc aidi aidu aiia aiib aiic aiid aioc aioi aiud aiui aoba aoca auaa auca auci audc audi audo ba-i baaa baad baba babb babi babo babu bac- baca bacc baci baco bada badb badd badi bado badu baia baib baic baid baio bau- baud bbad bbau bbbb bbci bbdd bbdo bcaa bcbc bcca bccc bcci bcda bcia bcuc bdbc bddc bdii biad biao biba bibb bibi bibo bica bicc bici bico bida bidi bido bidu bio- bioc bioi biou boab boac boad boai boba bobb bobi bobo bobu boca boco bocu boda bodb bodi bodo bodu boi- boid boii boiu boob booc bood boua boud buad buba bubb bubi bubo bubu buca bucc buci buco bucu buda budb budd budi budo budu buic buid buiu c-bo c-cd caaa caab caac caba cabi cabo cabu cac- caca cacc caci caco cada cadc cadd cadi cado cadu caia caib caic caid caio caiu caod caoi cauc cauo cbac cbbc cbca cbcc cbcu cbdb cbdc cbdi cbdo cbia cbid ccaa ccab ccac ccad ccai ccba ccbc ccca cccb cccc ccci cccu ccdc ccdi ccic ccid ccii ccob ccoc ccod ccuc cdaa cdac cdad cdai cdba cdda cddb cdic cdii cdio ciaa ciao ciau ciba cibc cibi cibo cica cicc cici cico cicu cida cidc cidi ciia ciid ciii ciob ciuc coad coai coba cobb cobi cobo cobu coca coco cocu coda codd codi coia coob cood coua coub coud cuau cub- cuba cubb cubi cuca cucc cuci cuda cudi cui- d-bo daab daad daau daba dabb dabo dabu daca daci dada dadi dado dadu daia daid daio daou daub daud dbcc dcbc dcca dccb dccc dcci dccu dcdb dcia dcii dcio dddd ddoc ddub dia- diab diac diad diao diba dibb dibo dica dici dico dida didi dido didu diii dioc diou doab doba dobb dobi dobu doca doci doco docu dod- doda dodd dodi dodo doid doob dood doub douc doud duaa duab duad dub- duba dubb dubc dubu duca duco duda dudd dudo dudu duid duo- iaaa iaac iaai iaba iaca iacc iacu iadb iadc iaia ibac ibad ibca ibdo ibia ibid icaa icab icac icad icai icao icbc icbd icca iccb iccc icci icco iccu icdc icdd icoc icod icub idad idca idda iddo idia idic idid idio idoc idub iduo iiac iica iicd iida iiii iiio iioi iioo iiuc ioba iobi ioci iod- ioda iodd iodo ioii ioio iooi iooo iucc iuiu oaau oaic obad obai obba obbo obia obid oboi ocab ocac ocad ocbc occa occc occi odac odai odbo odci odda oddd oddi odia odic odio odiu odoo odou oiba oici oido oiii ooaa ooba oobi ooda oodi ooia ooid oooo ouac ouad oucc oudc ouii ouu- uabc uaca uaoc uaua ubac ubba ubbi ubbo ubic ubid ubii uboc ubod ubud ucad ucai ucbc ucca ucci ucdc ucdd ucio ucua udaa udad udau udbc udca uddi udic udid udoo uica uocc uuoc uuuu