-vac a-ii a-iv aaaa aaab aaac aaai aaar aaav aaba aabb aabc aabi aaca aacb aacc aaci aaco aacr aacv aaib aaic aaii aaoo aara aarc aari aaro aava abaa abab abac abai abar abb- abba abbb abbi abbo abbr abca abcb abcc abci abcr abia abib abic abir aboa abob aboo abor abov abra abrc abri abro abva acaa acab acac acai acar acba acca accc acci acco aci- acia acic acir acoa acor acr- acra acrc acri acro acrr acrv acvv aiai aiba aibo aica aicc aicr aiia aiib aiic aiir aioc aioi aira airi airo aiva aoba aoca aora aorb arab arac arai arar arba arbi arc- arca arci arco aria arib arii ario aroa arob aroi aroo aror arr- arra arrc arri arro arrr arva arvi arvo avab avao avar avcc avco avia avic avio aviv avor avra avri avro avva avvo ba-i baaa baar baba babb babi babo babr bac- baca bacc baci baco baia baib baic baio bair bar- bara barb barc bari baro barr bava bavi bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcor bcra bcvo biao biar biba bibb bibi bibo bica bicc bici bico bio- bioc bioi bira birb biri biro birr bivi boab boac boai boar boba bobb bobi bobo boca boco boi- boii boob booc boor bor- bora bori boro borr bova bovi bovo brab brac brai brao brav brca brcb bria bric brio broa brob broc broo bror brrr brvi c-bo caaa caab caac caba cabi cabo cac- caca cacc caci caco cacr caia caib caic caio cair caoi caor cara carb carc cari caro carr cava cavi cavo 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 ccob ccoc ccra ccrc ccri ccvi ccvo ciaa ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr ciia ciii ciob cior cira cirb circ ciri ciro cirr civa civc civo coai coba cobb cobi cobo coca coco coia coir coob cor- cora corb corc cori coro corr cova covo crab crac crai crar crbc crca crcc crcr cria crib cric crob croc croo cror 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 ibro icaa icab icac icai icao icar icbc icca iccb iccc icci icco iccr icoc icor icra icrc icrr iiac iica iiii iiio iioi iioo iira iirc ioba iobi ioci ioii ioio iooi iooo iora iori irac irai irao irar irca ircc iri- iria iric irio irob iroc irov irra irrc irri ivai ivao ivar ivbv ivic ivor oaic oara obai obba obbo obia oboi obor obra obri obro obvi ocab ocac ocbc occa occc occi ocra ocro ocrr oiav oiba oici oiii oira ooaa ooba oobi oocr ooia oooo oora orab orac orai orao orar orav orba orbb orbi orbo orca orci orco ori- oria oric orio oro- oror orra orri orro orvr ovar ovi- ovo- ovoo ovra raab raba rabb rabi rabo rac- raca racc raci raco racv raia raic raii rair raob raoc rara rarb rari raro rava ravi rbbb rbbr rcac rcbc rcbo rccb rccc rcic rcvr riaa riab riai rib- riba ribo rica ricc rico riia riri riva rivo roab roar rob- roba robb robi robo roca rocc roco roia roio roir roob rooi roor rora rorc rori roro rova rovi rovo rrrr rv-c rvca vaar vaca vaco vaia vaio vair vara vari varr vava vbcc vcbi vcci viar vic- vica vici vico viii vira virb virc viri viro virr viva vivi vivo voar voca voia voic voio voir vooc voor vor- vora vori voro vrac vrai vrav vrba vrci vria vrio vroc vvob vvvv