a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aaca aacb aacc aaci aaco aacr aacu aaib aaic aaii aaoo aara aarc aari aaro aaru abaa abab abac abai abar abau abb- abba abbb abbi abbo abbr abca abcb abcc abci abcr abia abib abic abir abiu aboa abob aboo abor abou abra abrc abri abro abua acaa acab acac acai acar acba acca accc acci acco accu aci- acia acic acir acoa acor acou acr- acra acrc acri acro acrr acu- acuo acur aiai aiba aibo aica aicc aicr aiia aiib aiic aiir aioc aioi aira airi airo aiui aoba aoca aora aorb arab arac arai arar arau arba arbi arc- arca arci arco aria arib arii ario aroa arob aroi aroo aror arr- arra arrc arri arro arrr arru arua arub arui auaa auca auci aur- aura auri auro ba-i baaa baar baba babb babi babo babr babu bac- baca bacc baci baco baia baib baic baio bair bar- bara barb barc bari baro barr baru bau- baur bbau bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcor bcra bcru bcuc biao biar biba bibb bibi bibo bica bicc bici bico bio- bioc bioi biou bira birb biri biro birr biru boab boac boai boar boba bobb bobi bobo bobu boca boco bocu boi- boii boiu boob booc boor bor- bora bori boro borr boru boua bour brab brac brai brao brau brca brcb bria bric brio broa brob broc broo bror brou brrr bruc buar buba bubb bubi bubo bubu buca bucc buci buco bucu buic buir buiu bur- bura burb buri buro burr buru c-bo caaa caab caac caba cabi cabo cabu cac- caca cacc caci caco cacr caia caib caic caio cair caiu caoi caor cara carb carc cari caro carr cauc cauo cbac cbar cbbc cbca cbcc cbcr cbcu cbia cbir ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci cccu ccic ccii ccir ccob ccoc ccra ccrc ccri ccuc ciaa ciao ciar ciau ciba cibc cibi cibo cica cicc cici cico cicr cicu ciia ciii ciob cior cira cirb circ ciri ciro cirr ciuc coai coba cobb cobi cobo cobu coca coco cocu coia coir coob cor- cora corb corc cori coro corr coua coub cour crab crac crai crar crau crbc crbu crca crcc crcr cria crib cric criu crob croc croo cror crub cuau cub- cuba cubb cubi cuca cucc cuci cui- cuir cura curb curi curo curr iaaa iaac iaai iaba iaca iacc iacr iacu iaia iara iarc iaru ibac ibar ibca ibia ibra ibrc ibri ibro icaa icab icac icai icao icar icbc icca iccb iccc icci icco iccr iccu icoc icor icra icrc icrr icru icub iiac iica iiii iiio iioi iioo iira iirc iiuc ioba iobi ioci ioii ioio iooi iooo iora iori irac irai irao irar irca ircc ircu iri- iria iric irio irob iroc irra irrc irri iucc iuiu iura oaau oaic oara obai obba obbo obia oboi obor obra obri obro ocab ocac ocbc occa occc occi ocra ocro ocrr ocur oiba oici oiii oira ooaa ooba oobi oocr ooia oooo oora orab orac orai orao orar orba orbb orbi orbo orbu orca orci orco ori- oria oric orio oro- oror orra orri orro orub ouac oucc ouii ouir our- oura ouro ouu- raab raba rabb rabi rabo rabu rac- raca racc raci raco racu raia raic raii rair raiu raob raoc rara rarb rari raro raua raub rauc rbbb rbbr rcac rcbc rcbo rccb rccc rcic riaa riab riai riau rib- riba ribo ribu rica ricc rico riia riou riri roab roar rob- roba robb robi robo robu roca rocc roco roia roio roir roiu roob rooi roor rora rorc rori roro roru roua roub rrrr ruba rubb rubi rubu ruca ruci rura rurc ruri ruro ruru uabc uaca uair uaoc uarc uaru uaua ubac ubar ubba ubbi ubbo ubic ubii ubir uboc ubra ucai ucar ucbc ucca ucci ucio ucrc ucua uica uira uirr uocc uor- urac urai urao urau urba urbi urca urci uria urib uric uriu uro- uroa uroo urra urri urur uuoc uuri uuuu