a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aaca aacb aacc aaci aacr aaib aaic aaii aara aarc aari abaa abab abac abai abaj abar abb- abba abbb abbi abbr abca abcb abcc abci abcr abia abib abic abir abra abrc abri acaa acab acac acai acar acba acca accc acci aci- acia acic acir acr- acra acrc acri acrr aiai aiba aica aicc aicr aiia aiib aiic aiir aija aira airi ajab ajac ajar ajba ajri arab arac arai arar arba arbi arc- arca arci aria arib arii arij arja arr- arra arrc arri arrr ba-i baaa baar baba babb babi babr bac- baca bacc baci baia baib baic bair baja baji bar- bara barb barc bari barr bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcra biaj biar biba bibb bibi bica bicc bici bija biji bira birb biri birr bjcc brab brac brai braj brca brcb bria bric brrr caaa caab caac caba cabi cac- caca cacc caci cacr caia caib caic cair caja caji cara carb carc cari carj carr cbac cbar cbbc cbca cbcc cbcr cbia cbir cbrj ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci ccic ccii ccir ccra ccrc ccri ciaa ciar ciba cibc cibi cica cicc cici cicr ciia ciii cira cirb circ ciri cirr cjar cjbc cjca cjcb cjcj cjic cjrb cjrc cjrj crab crac crai craj crar crbc crca crcc crcr cria crib cric iaaa iaac iaai iaba iaca iacc iacr iaia iara iarc ibac ibar ibca ibia ibra ibrc ibri icaa icab icac icai icar icbc icca iccb iccc icci iccr icra icrc icrr iiac iica iiii iira iirc ijji irac irai iraj irar irca ircc iri- iria iric irra irrc irri jaar jaba jabi jabr jaca jacc jaci jair jaja jaji jara jarc jari jarr jbaa jbar jcbc jccc jcci jcrc jibb jibi jiji jira jiri jjar jjcc jrbr raab raaj raba rabb rabi rac- raca racc raci raia raic raii rair raja raji rara rarb rari rbbb rbbr rcac rcbc rccb rccc rcic riaa riab riai rib- riba rica ricc riia riji riri rrrr