-vac a-ii a-iv aaaa aaab aaac aaai aaar aaav aaba aabb aabc aabi aaca aacb aacc aaci aacr aacv aaib aaic aaii aara aarc aari aava abaa abab abac abai abar abb- abba abbb abbi abbr abca abcb abcc abci abcr abia abib abic abir abra abrc abri abva acaa acab acac acai acar acba acca accc acci aci- acia acic acir acr- acra acrc acri acrr acrv acvv aiai aiba aica aicc aicr aiia aiib aiic aiir aira airi aiva arab arac arai arar arba arbi arc- arca arci aria arib arii arr- arra arrc arri arrr arva arvi avab avar avcc avia avic aviv avra avri avva ba-i baaa baar baba babb babi babr bac- baca bacc baci baia baib baic bair bar- bara barb barc bari barr bava bavi bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcra biar biba bibb bibi bica bicc bici bira birb biri birr bivi brab brac brai brav brca brcb bria bric brrr brvi caaa caab caac caba cabi cac- caca cacc caci cacr caia caib caic cair cara carb carc cari carr cava cavi cbac cbar cbbc cbca cbcc cbcr cbia cbir cbva cbvb cbvr ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci cccv ccic ccii ccir cciv ccra ccrc ccri ccvi ciaa ciar ciba cibc cibi cica cicc cici cicr ciia ciii cira cirb circ ciri cirr civa civc crab crac crai crar crbc crca crcc crcr cria crib cric cvac cvar cvca cvcc cvii cvra cvrr iaaa iaac iaai iaba iaca iacc iacr iaia iara iarc iava 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 irac irai irar irca ircc iri- iria iric irra irrc irri ivai ivar ivbv ivic raab raba rabb rabi rac- raca racc raci racv raia raic raii rair rara rarb rari rava ravi rbbb rbbr rcac rcbc rccb rccc rcic rcvr riaa riab riai rib- riba rica ricc riia riri riva rrrr rv-c rvca vaar vaca vaia vair vara vari varr vava vbcc vcbi vcci viar vic- vica vici viii vira virb virc viri virr viva vivi vrac vrai vrav vrba vrci vria vvvv