-vac a-ii a-iv aaaa aaab aaac aaai aaav aaba aabb aabc aabi aaca aacb aacc aaci aaco aacv aaib aaic aaii aaoo aava abaa abab abac abai abb- abba abbb abbi abbo abca abcb abcc abci abia abib abic aboa abob aboo abov abva acaa acab acac acai acba acca accc acci acco aci- acia acic acoa acvv aiai aiba aibo aica aicc aiia aiib aiic aioc aioi aiva aoba aoca avab avao avcc avco avia avic avio aviv avva avvo ba-i baaa baba babb babi babo bac- baca bacc baci baco baia baib baic baio bava bavi bbbb bbci bcaa bcbc bcca bccc bcci bcia bcvo biao biba bibb bibi bibo bica bicc bici bico bio- bioc bioi bivi boab boac boai boba bobb bobi bobo boca boco boi- boii boob booc bova bovi bovo c-bo caaa caab caac caba cabi cabo cac- caca cacc caci caco caia caib caic caio caoi cava cavi cavo cbac cbbc cbca cbcc cbia cbva cbvb ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci cccv ccic ccii cciv ccob ccoc ccvi ccvo ciaa ciao ciba cibc cibi cibo cica cicc cici cico ciia ciii ciob civa civc civo coai coba cobb cobi cobo coca coco coia coob cova covo cvac cvca cvcc cvii iaaa iaac iaai iaba iaca iacc iaia iava ibac ibca ibia icaa icab icac icai icao icbc icca iccb iccc icci icco icoc iiac iica iiii iiio iioi iioo ioba iobi ioci ioii ioio iooi iooo ivai ivao ivbv ivic oaic obai obba obbo obia oboi obvi ocab ocac ocbc occa occc occi oiav oiba oici oiii ooaa ooba oobi ooia oooo ovi- ovo- ovoo vaca vaco vaia vaio vava vbcc vcbi vcci vic- vica vici vico viii viva vivi vivo voca voia voic voio vooc vvob vvvv