-ana -vac a-ak a-ok aaaa aaac aaan aaav aaca aacc aack aacn aaco aacv aaka aana aaon aaoo aava acaa acac acan acca accc acco acoa acon acvv akaa akan akao akca akka akko akna akok akon ana- anaa anac anak anan anao anca ancc anco ank- anka anko anna anno ano- anoa anon aoca aono avan avao avcc avco avon avva avvo caaa caac caan cac- caca cacc cack caco caka cana canc cank cann cano cava cavo ccaa ccac ccca cccc cccv ccna ccnc ccoc ccvo ckac ckan ckck ckco ckcv cknc ckoa ckoc ckoo ckvo cnaa cnac cnco cnna coak coan coca cock coco cok- coka coko con- cona conc conk conn cono conv cook coon cova covo cvac cvca cvcc kaaa kaak kaan kacc kaco kacv kaka kakc kakk kakn kako kana kann kano kanv kaoa kaoc kaok kaon kava kavo kavv kcaa kcac kcav kcca kccc kcck kccv kckc kckk kckn kcko kckv kcno kcnv kcon kcvk kcvo kcvv kkaa kkac kkan kkck kkcn kkco kkkk kknn kkno kkoa kkon kkoo kkov kkvv knaa knac knan knca knck kncn knco knkk knnk knoc knok knon knva knvn knvo koac koak koan koca kock kocn koka kokc kokk kokn koko kona konc konk kono kooc kook koon kooo koov kova kovc kovk kovo kvak kvan kvcc kvck kvco kvcv kvna kvnc kvnn kvno kvoa kvoc kvok kvon kvoo kvov kvvn kvvv naaa naac naan naca nacc nack naco naka nako nan- nana nann nano naoc nava navo navv ncaa ncac ncca nccc nccn ncna ncnc ncoa ncoc nkok nnnn noaa noac noak nock noco noko non- nona nonn nono noo- nook noon nooo noov nov- nova novo nvcc ocac ocak ocan occa occc occn ocna ocon okak okan okka okko okna okno okok okon onan onc- onca onco onna onno onon ooaa ooak oona oooo ovan ovo- ovon ovoo vaan vaca vack vaco vaka vana vanc vank vann vano vava vcon vnav voca voka vona vonk vonn vooc vovk vvvv