a-be a-ii aaaa aaab aaac aaae aaai aaar aaba aabb aabc aabi aaca aacb aacc aace aaci aaco aacr aacu aaea aaec aaib aaic aaii aaoe aaoo aara aarc aare aari aaro aaru abaa abab abac abae abai abar abau abb- abba abbb abbe abbi abbo abbr abca abcb abcc abci abcr abec abee aber abia abib abic abie abir abiu aboa abob aboo abor abou abra abrc abri abro abua abue acaa acab acac acae acai acar acba acca accc acce acci acco accu ace- acea acec acer aci- acia acic acie acir acoa acoe acor acou acr- acra acrc acre acri acro acrr acu- acue acuo acur aeac aebi aecb aeci aeer aeio aer- aera aerc aeri aero aiai aiba aibo aica aicc aice aicr aiea aiee aiia aiib aiic aiir aioc aioi aira aire airi airo aiui aoba aoca aoce aoeu aora aorb arab arac arae arai arar arau arba arbe arbi arc- arca arce arci arco area arec aree arei areo areu aria arib arie arii ario aroa arob aroe aroi aroo aror arr- arra arrc arre arri arro arrr arru arua arub arue arui auaa aube auca auce auci auer aur- aura aure auri auro ba-i baaa baar baba babb babe babi babo babr babu bac- baca bacc bace baci baco baer baia baib baic baie baio bair bar- bara barb barc bare bari baro barr baru bau- baur bbau bbbb bbci bbeb bbrc bcaa bcar bcbc bcca bccc bcci bcec bcer bcia bcie bcor bcra bcru bcuc bear beau beba bebb bebe bebi bebo beca beci becu beeb beer beia beic beir beo- beor bera berc bere beri bero berr beru beur biao biar biba bibb bibe bibi bibo bica bicc bice bici bico bieb bier bieu bio- bioc bioi biou bira birb bire biri biro birr biru boab boac boai boar boba bobb bobe bobi bobo bobu boca boce boco bocu boea boec boee boeo boer boi- boie boii boiu boob booc booe boor bor- bora bore bori boro borr boru boua boue bour brab brac brae brai brao brau brca brcb brce brea breb brec bree brei breo brer bria bric brie brio broa brob broc broe broo bror brou brrr bruc brue buar buba bubb bube bubi bubo bubu buca bucc buce buci buco bucu buea buer bueu buic buie buir buiu bur- bura burb bure buri buro burr buru c-bo caaa caab caac caba cabe cabi cabo cabu cac- caca cacc cace caci caco cacr caec caei caer caeu caia caib caic caio cair caiu caoi caor cara carb carc care cari caro carr cauc cauo cbac cbar cbbc cbca cbcc cbce cbcr cbcu cbea cbec cbee cber cbia cbir cbre ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci cccu ccee ccic ccii ccir ccob ccoc ccra ccrc ccre ccri ccuc ceac cear ceba cebu cec- ceca cece ceci ceco ceeb ceec ceor ceou cer- cera cerc cere ceri cero ceui ciaa ciao ciar ciau ciba cibc cibe cibi cibo cica cicc cici cico cicr cicu ciee cier ciia ciii ciob cior cira cirb circ cire ciri ciro cirr ciuc coai coba cobb cobe cobi cobo cobu coca coce coco cocu coia coir coob cor- cora corb corc core cori coro corr coua coub coue cour crab crac crai crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree crei creo creu cria crib cric crie criu crob croc croe croo cror crub crue cuau cub- cuba cubb cube cubi cuca cucc cuce cuci cuer cui- cuir cura curb cure curi curo curr eaba eaca eacc eaec eaiu eara earb eare earo ebac ebba ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ebru ebur ecaa ecac ecai ecao ecar ecbc ecbe ecca eccb eccc ecce ecci ecco ecib eco- ecou ecra ecrc ecri ecrr ecru ecua eeca eeea eeee eeoc eera eerc eero eiao eica eico eiec eiei eier eiou eira eire eoir eora eore eori erau erba erbb erbe erca ercc erce ereb erec erei erer eria eric erie erio eriu erob eroc eroe eroi eroo erra errc erre erro erua erub eruc erur euba eubc eubi euer euoi eur- eura eurc eure euro i-be iaaa iaac iaai iaba iaca iacc iacr iacu iaea iaec iaia iara iarc iare iaru ibac ibar ibca ibea ibec ibia ibie ibra ibrc ibri ibro icaa icab icac icai icao icar icbc icca iccb iccc icci icco iccr iccu icea icec icee icer icoc icor icra icrc icre icrr icru icub icue ieac iecc ieie ieio iera iere ieri iiac iica iiie iiii iiio iioi iioo iira iirc iiuc ioba iobi ioci ioee ioii ioio iooi iooo iora iore iori irac irae irai irao irar irbe irca ircc ircu iree irer iri- iria iric irie irio irob iroc irra irrc irre irri iucc iuce iuiu iura o-eo oaau oaer oaic oara oare obai obba obbo obea obec ober obia obie oboe oboi obor obra obre obri obro ocab ocac ocbc occa occc occi oce ocee ocra ocre ocro ocrr ocur oec- oeca oecc oeec oera oere oiba oici oier oiii oira oire ooaa ooba oobe oobi oocr ooer ooia oooo oora oore orab orac orae orai orao orar orba orbb orbe orbi orbo orbu orca orce orci orco ore- orea oreb orec oreo orer ori- oria oric orie orio oro- oroe oror orra orri orro orub ouac oucc ouea ouer ouie ouii ouir our- oura oure ouro ouu- raab raba rabb rabe rabi rabo rabu rac- raca racc race raci raco racu raec raer raia raic raie raii rair raiu raob raoc rara rarb rare rari raro raua raub rauc raue rbbb rbbr rcac rcbc rcbo rccb rccc rcic rea- reac reae reao rear reau reba rebb rebe rebo rebu reca recc rece reci recr recu reeb reia reii reir reiu reou rera rere reri rero reru reue reuu riaa riab riai riau rib- riba ribe ribo ribu rica ricc rice rico rier rieu riia