a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aaca aacb aacc aaci aacr aacu aaib aaic aaii aara aarc aari aaru abaa abab abac abai abar abau abb- abba abbb abbi abbr abca abcb abcc abci abcr abia abib abic abir abiu abra abrc abri abua acaa acab acac acai acar acba acca accc acci accu aci- acia acic acir acr- acra acrc acri acrr acu- acur aiai aiba aica aicc aicr aiia aiib aiic aiir aira airi aiui arab arac arai arar arau arba arbi arc- arca arci aria arib arii arr- arra arrc arri arrr arru arua arub arui auaa auca auci aur- aura auri ba-i baaa baar baba babb babi babr babu bac- baca bacc baci baia baib baic bair bar- bara barb barc bari barr baru bau- baur bbau bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcra bcru bcuc biar biba bibb bibi bica bicc bici bira birb biri birr biru brab brac brai brau brca brcb bria bric brrr bruc buar buba bubb bubi bubu buca bucc buci bucu buic buir buiu bur- bura burb buri burr buru caaa caab caac caba cabi cabu cac- caca cacc caci cacr caia caib caic cair caiu cara carb carc cari carr cauc cbac cbar cbbc cbca cbcc cbcr cbcu cbia cbir ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci cccu ccic ccii ccir ccra ccrc ccri ccuc ciaa ciar ciau ciba cibc cibi cica cicc cici cicr cicu ciia ciii cira cirb circ ciri cirr ciuc crab crac crai crar crau crbc crbu crca crcc crcr cria crib cric criu crub cuau cub- cuba cubb cubi cuca cucc cuci cui- cuir cura curb curi curr iaaa iaac iaai iaba iaca iacc iacr iacu iaia iara iarc iaru ibac ibar ibca ibia ibra ibrc ibri icaa icab icac icai icar icbc icca iccb iccc icci iccr iccu icra icrc icrr icru icub iiac iica iiii iira iirc iiuc irac irai irar irca ircc ircu iri- iria iric irra irrc irri iucc iuiu iura raab raba rabb rabi rabu rac- raca racc raci racu raia raic raii rair raiu rara rarb rari raua raub rauc rbbb rbbr rcac rcbc rccb rccc rcic riaa riab riai riau rib- riba ribu rica ricc riia riri rrrr ruba rubb rubi rubu ruca ruci rura rurc ruri ruru uabc uaca uair uarc uaru uaua ubac ubar ubba ubbi ubic ubii ubir ubra ucai ucar ucbc ucca ucci ucrc ucua uica uira uirr urac urai urau urba urbi urca urci uria urib uric uriu urra urri urur uuri uuuu